Which of the following is an example of a sample that would NOT be random? A. Going through the list and choosing the first 25 names on the list. B. Writing each student’s name on a card and then drawing out 25 names without looking. C. Choosing one student at random from the list and going through the list and choosing every fifth student until she has 25 names. D. Separating the students on the list into boys and girls and choosing a sample from each group that is proportional to the size of the group.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

Answer 2

Answer:

A

Step-by-step explanation:


Related Questions

I need the answer pls, answer fast I am I s choool

Answers

Answer:

Hello! answer: D. 180

Step-by-step explanation:

What you do for these is find the surface area for each face separately then add them up so...

for the sides its 18 for the top and bottom it's 48 for the front and back it's 24 so now we add all 6 up so... 18 + 18 + 48 + 48 + 24 + 24 = 180 Hope that helps!

Answer:

180 in²

Step-by-step explanation:

To wrap the given box, we need to find the total surface area of the figure.

TSA of cuboid = 2 (lb + bh + hl)

= 2 { (6*8) + (8*3) + (3*6) }

= 2 ( 48 + 24 + 18 )

= 2 * 90

= 180 in²

What is the correct answer I will mark brainlist

Answers

Answer:

3rd

Step-by-step explanation:

MARK AS BRAINLEST!!

The correct answer is C $87.73

A. 12/29
B. 3/5
C. 2/3
D. 20/29​

Answers

Answer:

Where is the question? The Answer is 20/29

Step-by-step explanation:

Brainiest

Find the area of the parallaogram to the nearest tenth

Answers

Answer:

sorry I think yr question is incomplete.

u forget to add picture.

stay safe healthy and happy.


What is the shape of y=x3?

Answers

Answer:

cubic

Step-by-step explanation:

y = x³  is a cubic shape  try graphing it

Solve the rational equation:
1 1 1
x-2x+3 5
O A. X=-6.09, x= 5.09
B. There is no solution.
O C. x=-3.09, x= 2.09
D. X=-3, x= 2

Answers

This is A
………………. ……………

The solutions for the equation 23 - x² - 2x = 0 are:

x = 4

x = -6

Option A is the correct answer.

We have,

To solve the rational equation:

1/(x - 1) - 1/(x + 3) - 1/5 = 0

We need to find the common denominator and combine the fractions on the left-hand side.

The common denominator is (x - 1)(x + 3)(5).

Multiplying each term by the common denominator:

[(x + 3)(5) - (x - 1)(5) - (x - 1)(x + 3)] / [(x - 1)(x + 3)(5)] = 0

Simplifying:

[5(x + 3) - 5(x - 1) - (x - 1)(x + 3)] / [(x - 1)(x + 3)(5)] = 0

[5x + 15 - 5x + 5 - (x² + 3x  - x - 3)] / [(x - 1)(x + 3)(5)] = 0

[5x + 15 - 5x + 5 - x² - 3x + x + 3 ] / [(x - 1)(x + 3)(5)] = 0

Simplifying further:

[23 - x² - 2x ] / [(x - 1)(x + 3)(5)] = 0

Now, we set the numerator equal to zero since a fraction is zero if and only if its numerator is zero:

23 - x² - 2x = 0

To solve the quadratic equation 23 - x² - 2x = 0, we can rearrange it to the standard form:

x² + 2x - 23 = 0

Now, we can solve it using factoring, completing the square, or the quadratic formula. Let's solve it using the quadratic formula:

The quadratic formula states that for an equation in the form

ax² + bx + c = 0, the solutions for x are given by:

x = (-b ± √(b² - 4ac)) / (2a)

For our equation x² + 2x - 23 = 0, the coefficients are a = 1, b = 2, and

c = -23.

Substituting these values into the quadratic formula:

x = (-2 ± √(2² - 4(1)(-23))) / (2(1))

Simplifying:

x = (-2 ± √(4 + 92)) / 2

x = (-2 ± √96) / 2

x = (-2 ± 4√6) / 2

Simplifying further:

x = -1 ± 2√6

Therefore,

The solutions for the equation 23 - x² - 2x = 0 are:

x = -1 + 2√6 = 3.89 = 4

x = -1 - 2√6 = -5.89 = -6

Learn more about equations here:

https://brainly.com/question/17194269

#SPJ6

Each quarter the marketing manager of a retail store divides customers into two classes based on their purchase behavior in the previous quarter. Denote the classes as L for low and H for high. The manager wishes to determine to which classes of customers he should send quarterly catalogs. The cost of sending a catalog is $15 per customer and the expected purchase depends on the customer’s class and the manager’s action. If a customer is in class L and receives a catalog, then the expected purchase in the current quarter is $20, and if a class L customer does not receive a catalog his expected purchase is $10. If a customer is in class H and receives a catalog, then his expected purchase is $50, and if a class H customer does not receive a catalog his expected purchase is $25. The decision whether or not to send a catalog to a customer also affects the customer's classification in the subsequent quarter. If a customer is class L at the start of the present quarter, then the probability he is in class L at the subsequent quarter is 0.3 if he receives a catalog and 0.5 if he does not. If a customer is class H in the current period, then the probability that he remains in class H in the subsequent period is 0.8 if he receives a catalog and 0.4 if he does not. Assume a discount rate of 0.9 and an objective of maximizing expected total discounted reward.
a) Formulate this as an infinite-horizon discounted Markov decision problem.
b) For ???? = 0.1, find a near-optimal policy using value iteration.
c) Find an optimal policy using policy iteration starting with the stationary policy which has greatest one-step reward.
d) Formulate the problem as a linear program, giving its primal and dual. Solve both and interpret the solutions.

Answers

Answer:

55

Step-by-step explanation:

Mark borrowed $5,500 at 11.5 percent for five years.

How much did Mark pay in interest?

$1,150

$1,520

$1,757

$2,300

Answers

Answer:

   $ 1 , 150

Step-by-step explanation:

Express in words 18.01

Answers

what is the question?

Answer:

Eighteen point zero one

Step-by-step explanation:

Eighteen point zero one

Joey opened a bank account 5 years ago with $100.
Today he has $1,000 in the account.
What is the percentage of increase?
_____%

Answers

$200 a year, for the last 5 years, equal $1,000. That is a 20% increase.

The base of a pyramid is a rectangle with a length of 3 centimeters and a width of 6 centimeters. If the height of the pyramid is 12 centimeters, what is the volume of the pyramid?

Answers

Answer:

Step-by-step explanation:

okay so if the centimeter is 3 you would multiply it by 6 cm and that

18 and then mulitiply that by 12 and your answer is

216

Components of a certain type are shipped to a supplier in batches of ten. Suppose that 50% of all such batches contain no defective components, 35% contain one defective component, and 15% contain two defective components. Two components from a batch are randomly selected and tested. What are the probabilities associated with 0, 1, and 2 defective components being in the batch under each of the following conditions?

a. Neither tested component is defective.
b. One of the two tested components is defective

Answers

Answer:

a) P (0 defective component) = 0.5

   P( 1 defective component ) = 0.35

    P( 2 defective component ) = 0.15

b) P( 0 ) = 0

   p ( 1 ) =  1

   p ( 2 ) = 0.33

Step-by-step explanation:

p( no defective ) = 0.5

p( 1 is defective ) = 0.35

p( 2 is defective ) = 0.15

Given that 2 components are selected at random

a) Given that neither component is defective

Probability of 0 defective component = 0.5

P( 1 defective component ) = 0.35

P( 2 defective component ) = 0.15

b) Given that one of the two tested component is defective

P( 0 defective ) = 0

P( 1 defective ) = P ( [tex]\frac{x=1}{x\geq 1}[/tex] ) = p( x = 1 ) / 1 - P ( x = 0 )

                                        = ( 0.5 )^1 ( 0.5 )^0 /  1 - ( 0.5)^0 (0.5)^1

                                        = 0.5 * 1 / 1 - 0.5 = 0.5 / 0.5 =  1

p ( 2 defective ) = p( x = 3 ) / 1 - P ( x = 0 )

                         = ( 0.5 )^2 ( 0.5 )^0 /  1 - ( 0.5)^0 (0.5)^2

                         = 0.25 / 0.75 = 0.33

Lauren is making string bracelets with black and silver beads added in for decoration.

Black beads come in packages of 24, and silver beads come in packages of 36.
Each bracelet will have the same number of each color bead.
Lauren has one package of each bead color, and she will use all of the beads.
What is the greatest number of bracelets Lauren can make?

Answers

The greatest number of bracelets Lauren can make using the black beads and the silver beads is 12.

What is the greatest number of bracelets that can be made?

In order to determine the greatest number of bracelets that can be made, the highest common factor of both numbers have to be determined.

Highest common factor is the highest factor that is common to two or more numbers

Factors of 24 = 1, 2, 3, 4, 6, 8, 12, 24Factors of 36 = 1, 2, 3, 4, 6, 12, 18, 36 Highest common factor = 12

To learn more about highest common factor, please check: https://brainly.com/question/26073850

#SPJ2

Henry is fishing from a small boat. His fishing hook is in the water 8 meters directly below his boat. A fish is swimming at the same depth as the hook, however it is 15 meters away from the hook. What is the shortest distance between Henry and the fish?

Answers

Answer: 17

Step-by-step explanation:

Which BEST describes the system of equations graphed on a coordinate plane?
A) Consistent
B) Inconsistent
C) Consistent and Dependent
D) Consistent and Independent

Answers

Answer:

D) Consistent and Independent

Answer:

D.consistent and independent

The following is a geometric series.
6+8+11+15+20+26+...
O True
Ő False
Explain why for brainliest

Answers

Answer: false

Step-by-step explanation:

Answer:

False because a sequence is geometric if common ratio of all terms of sequence is same.

here 8/6 is not equal 11/8.

Eg: the sequence 3,6,12,… is geometric because 6/3 = 12/6.

ILL GIVE BRAINLIEST
YOUR FRIEND JUST OPENED THEIR FIRST CREDIT CARD WHAT ADVICE WOULD YOU GIVE THEM BEFORE THEY START MAKING PURCHASES?

Answers

Answer:

I would tell them to buy a ps5 for me

Step-by-step explanation:

For a credit card be careful with what you buy, save it for the important stuff. Also make sure to constantly check your credit score and to check your purchases to make sure that only what you purchased is on there.

Curts kite is 36 yards above the ground and directly above the tree. The length of the string from Curt to the kite is 49 yards. How far is Curt from the tree?

Answers

Answer:

about 33.24 yards

Step-by-step explanation:

a² + b² = c²

so, 36² + b² = 49²

1296 + b² = 2401

b² = 1105

Take the square root of both sides..

b = 33.24 yards

2. A movie theater charges $15 for adults and children and $10 for seniors. A
total of $1,270 was collected for movie ticket sales one night for a selected
movie. The total number of tickets sold for that movie was 93. How many
adult and senior tickets were sold?

b. Write the equations:

Answers

Answer:

A. Adult=68, seniors=25B. 10a + 10s=1270. a + s=93

Step-by-step explanation:

15a + 10s =1270 equation 1

a + s =93 equation 2

a=93-s. Isolate a for equation 2

15(93-s) + 10s =1270 substitute value of a in equation 2 (93-s) with value of a in             equation 1

1395-15s+10s=1270

-5s=-125

S=25

solve for a

a + s =93

a + 25=93

a=68

‘check answer

15a + 10s=1270

15(68) + 10(25)=1270

1020+ 250=1270

Simplify the expression using order of operation 5 x 2 + 3 to the power of 2

Answers

answer= 1

5 x 2 - 3^2

1. First simplify exponents

= that is nine

2. Then Do 5 x 2- 9

5 x 2=10

10-9

= 1

A function that has f(-x)=f(x) is known as what type of function?

a one to one function
an even function
an odd function
an asymmetric function

Answers

Step-by-step explanation:

The answer is even function.

HELP ME PLEASEEEEEEEEEEEEEEEE

Answers

90 mm ..................

Answer:

90 mm^2

Step-by-step explanation:

Divide it in 2 figures

Get the area of the one of 5 * 6 mm = 30mm^2

Then the one of 6 * 10 mm = 60 mm^2

Then just add it up. 90 mm^2

When factored completely, the expression p4 - 81 is equivalent to ....
1. (p2+9)(p2-9)
2. (p2-9)(p2-9)
3. (p2+9)(p+3)(p-3)
4. (p+3)(p-3)(p+3)(p-3)​

Answers

The answer is option 3 (p^2+9)(p+3)(p-3) because you use the difference of squares formula

Agree or Disagree? plz help no link plz

Answers

Answer:

Agree

Step-by-step explanation:

Last year there were 750 students enrolled in Park School, but this year there are only 685 students enrolled. What is the percent of decrease? Round to the nearest tenth.

Answers

Answer:

91 (1/3)

Step-by-step explanation:

first do 750 / 100 becuase thats is 100%

the answer to 750 / 100 is 7.5 then take 7.5 what you do is 685 / 7.5 and you get the answer

Answer:

-8.6666666666667% decrease

Step-by-step explanation:

Please help will give brainliest


Small
Large
Blue 17
Red
8
3
12
?
Find: P(Red and Small)
Remember to reduce your answer.

Answers

Answer:

3/10

Step-by-step explanation:

Remark

The denominator of the probability is the entire amount present. Just add

Denominator

Blue/Large      17

Red/Large        8

Small                3

Red Small      12

Total               40

Red / Small

P(red/small) = 12 / 40

P(red/Small)  = 3 / 10

what the the opposite of - 4.1 ?

Answers

the opposite of -4.1 would be 4.1

Answer:

The opposite of -4.1 is 4.1.

opposites are the same number but either with a + sign or a - sign

EX)

7, -7

5, -5

4, -4

A company has 200 employees. There are 150 female employees. There are 40 employees who are under the age of 30. The probability
of randomly selecting an employee who is female or is under the age of 30 is 85%.
What is the probability of randomly selecting an employee who is female and under the age of 30?
O A 10%
O B. 20%
O c. 85%
OD. 95%

Answers

I think it’s B hope that helped

Answer:

c. 85 % is the probability

Discount
Walmart offers a shirt initially at $100. Then one week later, Walmart offers the shirt at 15% off. The
shirt still doesn't sell, so after another week, Walmart reduces its new price by 20%. How much does the
shirt cost now?
Choose one. 5 points
$68.00
$65.00
$69.00
$60.00

Answers

Answer:

$65.00

Step-by-step explanation:

Cost price of shirt after giving discounts is equals to [tex]\$68[/tex].

What is Cost price?

" Cost price is defined as the price to be paid at the time of purchase any product."

According to the question,

Initial cost price of shirt [tex]= \$100[/tex]

First discount [tex]= 15\%[/tex]

Discount amount [tex]= 15\%[/tex] of [tex]100[/tex]

                             [tex]= \frac{15}{100} \times 100\\\\= \$15[/tex]

Cost price after first discount [tex]= 100 - 15[/tex]

                                                 [tex]= \$85[/tex]

Second discount [tex]= 20\%[/tex]

Discount amount [tex]= 20\%[/tex] of [tex]85[/tex]

                             [tex]= \frac{20}{100} \times 85\\\\= \$17[/tex]

Cost price after first discount [tex]= 85 - 17[/tex]

                                                 [tex]= \$68[/tex]

Hence, cost price of shirt after giving discounts is equals to [tex]\$68[/tex].

Learn more about cost price here

https://brainly.com/question/11027396

#SPJ2

Instructions: Find the missing side lengths. Leave your answers
radicals in simplest form.
Please help, no links

Answers

Answer:

Im pretty sure the first one is [tex]4\sqrt{3}[/tex]

and the second is 4

Other Questions
PLEASE I NEED HELP ASAP!! Extinctions have occurred often throughout the Earth's history. Which statement best explains why this is the case?a. The Earth could no longer support so many creatures.b. A dominant species will take control and eliminate the other local organisms.c. Events might occur that change the Earth enough to cause extinction.d. The climate will spontaneously change. Summer Job!Earn $150/weekPlus $2.75 per subscription soldLet: T = Total weekly earningsN = Number of subscriptions soldChoose the equation that models weekly earnings for the summer jobadvertisement. Curts kite is 36 yards above the ground and directly above the tree. The length of the string from Curt to the kite is 49 yards. How far is Curt from the tree? What is the BALANCE POINT for this set of data? Type the NUMBER ONLY. :) Each quarter the marketing manager of a retail store divides customers into two classes based on their purchase behavior in the previous quarter. Denote the classes as L for low and H for high. The manager wishes to determine to which classes of customers he should send quarterly catalogs. The cost of sending a catalog is $15 per customer and the expected purchase depends on the customers class and the managers action. If a customer is in class L and receives a catalog, then the expected purchase in the current quarter is $20, and if a class L customer does not receive a catalog his expected purchase is $10. If a customer is in class H and receives a catalog, then his expected purchase is $50, and if a class H customer does not receive a catalog his expected purchase is $25. The decision whether or not to send a catalog to a customer also affects the customer's classification in the subsequent quarter. If a customer is class L at the start of the present quarter, then the probability he is in class L at the subsequent quarter is 0.3 if he receives a catalog and 0.5 if he does not. If a customer is class H in the current period, then the probability that he remains in class H in the subsequent period is 0.8 if he receives a catalog and 0.4 if he does not. Assume a discount rate of 0.9 and an objective of maximizing expected total discounted reward.a) Formulate this as an infinite-horizon discounted Markov decision problem.b) For ???? = 0.1, find a near-optimal policy using value iteration.c) Find an optimal policy using policy iteration starting with the stationary policy which has greatest one-step reward.d) Formulate the problem as a linear program, giving its primal and dual. Solve both and interpret the solutions. Many delegates who did not sign the Constitution did so because they felt the documenta. listed too many basic rights and freedoms.b. didnt allow changes to it.c. did not secure individual liberties.d. None of the above. Learning Task 7. Answer the questions brieflyWrite True if the statement is correct and False if the statement is incorrect._1. Light can be reflected if it is directed towards a mirror._2. The speed of light remains the same even if it travels from onematerial to another._3. Sound could be either soft or loud._4. The loudness of sound decreases as it moves nearer theobserver._5. Echo is the term used for the sound that is reflected back to itssource Roy is in a hot air balloon that has just taken off and is floating above its launching point.Dirk is standing on the ground, 7 meters away from the launching point. If Roy and Dirk are10 meters apart, how high up is Roy? If necessary, round to the nearest tenth._____ meters Please and thank you!No links!!!! In which economic system does the government control ALL economic decisions? A. Limited B. Unlimited C. Semi-limited Es el mes de agosto. Nieva y hace mucho fro. Hoy voy a esquiar con mis amigos. Estoy en _______. (1 point) Find AB round to nearest tenth did i do this right? HELLPP I NEED THE ANSWER NOW!!!!! Bloodworms, which are the mature larvae of non-biting midge flies, are commonly found in and around bodies of water. Most types of bloodworms can live only in pollution-free, oxygen-rich environments. However, a few species thrive in environments with low concentrations of oxygen and high concentrations of nutrients and pollutants. From the changes in the bloodworm populations shown in the table above, what can be determined about how water in the stream has changed?A. The water has become less polluted, as evidenced by the decrease in the number of bloodworm species present and the increase in bloodworm population density. B. The water has become more polluted, as evidenced by the decrease in the number of bloodworm species present and the increase in bloodworm population density. C. The water in the stream has become less nutrient-rich, as evidenced by the increase in bloodworm population density. D. The water in the stream has become more oxygenated, as evidenced by the increase in bloodworm population density. How much energy is required to raise the temperature of a 300.0gram block of lead from 22.3C to 59.9C? The specific heat of lead is0.129 J/gC. Ok here is the question I need it answered fast I'll give brainliest! Is this statement true or false?Japanese Americans being relocated to internment camps were given very little notice and could take only their clothes and a few small possessions. How many different codes can a combination lock have if there are 4 numbers on the lock and each number can be from 0-9? wait how does this work hehe this is kinda fun lol yay Based on the information presented in this map, one can conclude thatAthe majority of slave trading took place between African countries.Bseveral European countries participated in the African slave trade.most of slaves that were traded originally lived in east Africa.DAsia imported more slaves than any other continent.