Three scenarios are given in parts a through c below. For each​ scenario, determine the sampling method used by the managers. ​a) The managers select a single branch at random and survey every employee of that branch. A. The managers used a systematic sample. B. The managers used a multistage sample. C. The managers used a cluster sample. D. The managers used a stratified sample. E. The managers used a simple random sample. ​b) The managers use the company​ e-mail directory to contact every 3030th employee on the list. Choose the correct sampling method below. A. The managers used a cluster sample. B. The managers used a multistage sample. C. The managers used a stratified sample. D. The managers used a systematic sample. E. The managers used a simple random sample. ​c) The managers split the company into​ divisions, with each division containing employees that have similar jobs. Within each​ division, they select a SRS of employees to contact. Choose the correct sampling

Answers

Answer 1

Answer:

1. C. The managers used a cluster sample

2.  B)The managers used a systematic sample.

3. The managers used a stratified sample.

Step-by-step explanation:

1. In a cluster sampling method, the population would be divided into several small units called cluster by the researcher. Within these clusters we randomly pick one or more to observe.

2. In systematic sampling we select elements from an ordered sampling frame.

3. In stratified sampling, the population is divided into several stratas and the researcher then selects randomly to complete the sampling process


Related Questions

When Rd 105 is divided into two parts in the ratio of2:5 how much money will be in first part

Answers

Answer:

30

Step-by-step explanation:

2x+5x= 105

7x= 105

x= 105/7

x= 15

First part= 2x= 2(15)= 30

Answer is 30 ::::::::::::::::::

What would be the fundraiser money kept if they sold 10 t-shirts?

Answers

How much did the t-shirts cost?

PLZ HELP ME!!!!!I DONT UNDERSTAND

Answers

Answer:

(attached image)

Step-by-step explanation:

7) Cameron wants to buy new lacrosse equipment that costs $55.25. She plans to save $4.25 each
week. Write and solve an equation to determine how many weeks it will take her to save enough
money to buy the equipment. Define your variable and label your answer!

Answers

Answer:

13 weeks

Step-by-step explanation:

Let's say the number of weeks she will take is x. This would mean that 4.25 times the number of weeks(x) is equal to 55.25

Equation:

4.25x = 55.25

x=13

James and Tyree have new jobs at YumYum’s Ice Cream Parlor. James is Tyree’s manager. In their first year, James will be paid $14 per hour and Tyree will be paid $7 per hour. They have been told that after every year with the company, they will each be given a raise of $2 per hour. Is this realationship porprotional?

Answers

Answer:

No.

Step-by-step explanation:

(h represents the hours; y represents years; m represents the total money they'd get!)

If you put this into an equation, for James it would be:

14h +2y = M

For Tyree, it would be:

7h + 2y = M

Because the numbers don't match up, the answer is no. The relationship is not proportional.

Write the quotient as a power:

Answers

Answer

x^(2)    x to the second power

Step-by-step explanation:

To divide exponents (or powers) with the same base, subtract the exponents. Division is the opposite of multiplication, so it makes sense that because you add exponents when multiplying numbers with the same base, you subtract the exponents when dividing numbers with the same base.

Is this function linear? Why or why not? PLEASE LOOK AT THE PHOTO!! I really need it right now:)​

Answers

Answer:

yes

Step-by-step explanation:

yes

yes, no x values or y values repeat

Ryan is taking a survey to find out how many people prefer soda A over soda B. He surveyed 100 people and forty-nine preferred soda A. Seven percent had no preference for soda A or soda B. What percentage of peoples surveyed preferred soda B?

Answers

Answer:

44%

Step-by-step explanation:

Which ratio is NOT equivalent to 1:2

10:20
20:30
5:10
4:8

Answers

Answer:

The ratio 20:30 is not equivalent to 1:2.

20:30 is not equivalent

HELPS ME SOLVE THIS PROBLEM PLEASE

Answers

Answer:

The third answer, y = 4x + 1

Step-by-step explanation:

Let's take the pair x = 2, and y = 9.

We know what x is, and what the result, y, is now.

Let's plug x into the third equation, y = 4x + 1

y = 4 * 2 + 1

y = 8 + 1

y = 9

We already know that y = 9, so this equation is correct.

Hope this helps!

(Let me know if you want to know why it's not any of the others.)

Jose paid 45.00$ for 5 movie tickets . EACH ticket cost the same amount . What was the cost of each movie ticket in dollars ?

Answers

Answer:

$9

Step-by-step explanation:

divide 45 and 5, you get 9

Answer:

45.00$ divided by 5.00$ is 9.00$

i hoped this helped!

Step-by-step explanation:

help pls i need this right now

Answers

Answer:

Add the information, and find the second number.

Step-by-step explanation:

"She throws them 8.49 m/s high"

8.49 + ? = ?

"Her friend catches them 2.89 m/s higher"

8.49 - 2.89 = 5.60

The reason why you must subtract is because it is asking how high it is in the air, going up and down.

8.49 + 5.60 = ?

8.49 + 5.60 = 14.09

Which means, it was in the air for 14.09 m/s.

help me pplleeaassee?!

Answers

Answer:

1.  Quadrant IV

2.  Quadrant I

3.  Quadrant II

4.  Quadrant III

Plz mark brainliest:)

Absulate value of |-78|​

Answers

the absolute value of |-78| is 78

PLEEEEEEEEEEEEASE HELP ME WITH THIS! IT IS DUE TOMORROW!!!

Answers

Answer: They both equal 30

Solving Steps:
1. Solve for x
40-4x=50-8x
-4x+8x=50-40
4x=10
x=2.5

2. Find <1 and <2
40-4(2.5)
40-10
=30

which of the following expressions represents the product of a number and 8

Answers

Answer:

The answer is c. 8x

Ms. Rivera's class hoped to raise $135. They missed heir goal by $8.62. How ip much money did Ms. Rivera's class raise?
1. 144.42
2. 135
3. 126.38
4 127.28​

Answers

Answer:

126.38

Step-by-step explanation:

$135.00-$8.62=$126.38

How to solve 3(x + 1) − (3x + 2)

Answers

Answer:

Step-by-step explanation:

3(x + 1) − (3x + 2)

we will expand the first bracket:

3x+3-3x-2

3x and -3x cancels

3-2=1

Answer:

1

Step-by-step explanation:

3x+3+−3x+−2

=(3x+−3x)+(3+−2)

=1

Which graph below shows the solution set for the inequality b ≥ 5?
pls help meeeeeeeee

Answers

Answer: we can’t see graphs but I can help you if you show me them

Step-by-step explanation:

whats the capitol of Florida miaaaaaaa​

Answers

Answer:

Tallahassee

Step-by-step explanation:

Which graph represents an event function?

Answers

Answer:

We cannot see any graphs, add them so we can understand the problem

Which expression represents the area of this figure in square feet

Answers

Answer: A im positive its A

Step-by-step explanation: 3 times 2 equals 6 and add that to 3 times 4 which is 12 and you get 18


A chemist has three different acid solutions,
The first solution contains 20 % acid, the second contains 35 % acid, and the third contains 55%
acid.
She created 108 liters of a 40 % acid mixture, using all three solutions. The number of liters of
55 % solution used is 3 times the number of liters of 35 % solution used.
How many liters of each solution was used?
The chemist used
liters of 20% solution,
liters of 35 % solution, and
liters of 55 % solution.
Question Help: Message
instructor
Calculator

Answers

9514 1404 393

Answer:

36 liters of 20%18 liters of 35%54 liters of 55%

Step-by-step explanation:

Let a, b, c represent the quantities of 20%, 35%, and 55% solutions, respectively. Then for the given mix, we have ...

  a + b + c = 108 . . . . . total number of liters

  .20a +.35b +.55c = 0.40·108 . . . . . liters of acid

  0a - 3b + c = 0 . . . . . 55% solution was 3 times 35% solution

__

Solving these three equations by your favorite method gives ...

  (a, b, c) = (36, 18, 54)

The chemist used 36 liters of 20%, 18 liters of 35%, and 54 liters of 55%.

_____

Comment on alternate approach

Since the ratio of 55% to 35% is 3 : 1, that mix will have an acid content of ...

  (3(.55) +1(.35))/4 = 0.50 = 50%

So, the final mix is equivalent to some quantity of 50% mix being added to some quantity of 20% mix. The fraction that is 50% mix* will be (40-20)/(50-20) = 2/3 of the total, or (2/3)(108 L) = 72 L.

Now we know that (1/3)(108 L) = 36 L of 20% solution is needed and (1/4)(72 L) = 18 L of 35% solution is needed. 3 times that is 54 L of 55% solution.

__

* After you work a few mixture problems, you can see the pattern. If we start with an equation for x = fraction of 50% to use with 20% to make 40%, we get ...

  x(50%) +(1 -x)(20%) = 40%

  x(50% -20%) = 40% -20% . . . . . subtract 1(20%) and factor out x

  x = (40% -20%)/(50% -20%)

The key here is to see where the numbers 20%, 40%, and 50% show up in the fraction.

Emma jogs 2 miles along the beach in 1/3
of an hour. If she travels at a constant rate, how far will she jog in an hour?

1. Use the known information to write a rate.

Emma’s rate:
2 miles 1/3 hours

2. Write an equivalent rate with a denominator of 1.

2(3) miles / 1/3 (3) hours = ? /1 hour

Answers

Answer:

Step-by-step explanation:

6 miles

2 times 3 = 6

or

2 x 3/3 = 6

Review the incomplete derivation of the cosine sum identity.

A 2-column table with 5 rows. Column 1 has entries step 1, step 2, step 3, step 4, step 5. Column 2 has entries cosine (x + y), sine (StartFraction pi Over 2 EndFraction minus (x + y) ), blank, sine (StartFraction pi Over 2 EndFraction minus x) cosine (negative y) + cosine (StartFraction pi Over 2 EndFraction minus x) sine (negative y), blank.

Which expressions for Step 3 and Step 5 complete the derivation?

Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) + y )
Step 5: cos(x)cos(y) + sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) + y )
Step 5: cos(x)cos(y) – sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) minus y )
Step 5: cos(x)cos(y) + sin(x)sin(y)
Step 3: Sine ( (StartFraction pi over 2 EndFraction minus x) minus y )
Step 5: cos(x)cos(y) – sin(x)sin(y)

Answers

Answer:

Option (4)

Step-by-step explanation:

STEP - 1

cos(x + y)

STEP - 2

[tex]\text{sin}[\frac{\pi}{2}-(x+y)][/tex]

STEP - 3

[tex]\text{sin}[(\frac{\pi}{2}-x)-y][/tex]

STEP - 4

[tex]\text{sin}(\frac{\pi}{2}-x)\text{cos}(-y)+\text{cos}(\frac{\pi}{2}-x)\text{sin}(-y)[/tex]

STEP - 5

cos(x)cos(y) - sin(x)sin(y)

[Since, [tex]\text{sin}(\frac{\pi}{2}-x)=cos(x)[/tex] and [tex]\text{cos}(\frac{\pi}{2}-x)=\text{sin}(x)[/tex]]

[Since, cos(-x) = cos(x) and sin(-x) = -sin(x)]

Therefore, Option (4) will be the correct option.

Answer:

D

Step-by-step explanation:

Top Answer was right, don't know why it was rated poorly

How much is 40 gallonsMai is filling her fish tank. Water flows into the tank at a constant rate. Complete the table below and answer the following questions. time (minutes) water (gallons) Please help asap!!

Answers

I’ll need to see the table and I’ll be able to help

please help me :( i really dont wanna fail

Answers

Answer:

Domain:

Jan,Feb,Mar,Apr

Range:

28,29,30,21

Not a Function because there is more than one output for a given input.

Step-by-step explanation:

domain=x

range=y

Renee hiked for 6
miles. After resting. Renee hiked back along the same route for 5
miles. How many more miles does Renee need to hike to return to the place where she
started? Represent your answer as a simplified mixed number, if necessary.
Renee still needs to hike
miles

Answers

Answer:

1 mile

Step-by-step explanation:

Renee hikd 6 miles, then went back 5. 6-5=1

Vance wants to determine if an old photo frame is still rectangular. The height of the frame is
8 inches, the base is 6 inches and the diagonal is 10 inches long. Is the old photo frame still
rectangular? How do you know?

Answers

Answer:

The old photo frame is still rectangular

Step-by-step explanation:

Rectangles

The rectangle shape can be identified because it has 4 internal angles of 90° each. The diagonal forms with two adjacent sides a right triangle where the Pythagora's Theorem must stand. Being a and b the length of the sides of the rectangle and d the diagonal, then:

[tex]d^2=a^2+b^2[/tex]

Vince's photo frame has dimensions of 8 inches and 6 inches, with a diagonal of 10 inches. If the above condition is met, then the frame is still rectangular.

Calculating:

[tex]10^2=6^2+8^2[/tex]

[tex]100=36+64[/tex]

[tex]100=100[/tex]

Since the condition is met, the old photo frame is still rectangular

Yesenia swims laps at a pool. For every 10 laps she swims the backstroke, she swims 15 laps of freestyle. Which ratio shows the number of laps Yesenia swims the backstroke to the number of laps she swims freestyle?

Answers

Answer:

2 3

Step-by-step explanation:

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