In chapter 1, we introduced several sampling methods: Simple random sample, stratified sampling, systematic sampling, and cluster sampling. All the sampling methods except for convenience sampling, allow for unbiased statistical inference to be made. Convenience sampling typically leads to an unrepresentative sample and biased results. In this week's discussion board, you are asked to design a sample that is representative of the population and unbiased. Scenario: A marketing executive for Coca- Cola, Inc. wants to identify television shows that people in the Seattle area who typically drink Coke are watching. The executive has a list of all households in the Seattle area. Task: You are asked to design a sample to obtain the individuals in the sample. Use the provided scenario to help the Coca-Cola executive identifying the television shows. Design a sample that meets the requirements we discussed in the previous chapter. You need to explain why did you choose this sampling method.

Answers

Answer 1

Answer:

For the coca-cola case, stratified sampling coupled with random sampling will be used.

Step-by-step explanation:

Before going into discussing the scenario, it is evident to discuss the properties of mentioned sampling methods. They are as follows:

Random sampling as the name indicates is purely by randomness. It is a sample in which each element of the population has an equal chance of coming on.

Systematic sampling is easier than random sampling. Here all the elements are arranged in an order and the kth element is considered after a specific interval.

Cluster Sampling is another type of sampling where the population is divided into groups probably on the basis of their geographical location and all the elements of the cluster are then used.

Stratified Sampling is a two-step sampling method where firstly the population is divided into strata, groups on basis of some characteristic, like gender, age, and then another sampling method as the random or systematic method is chosen to pick samples from each of these strata.

On the basis of properties presented and the scenario outlined, it is evident that the population will be divided into strata based on age, gender, profession, and education, and then a random sampling within each stratum is used for all the population of the Seattle area.


Related Questions

Jennifer's grandma bought her a $50 savings bond when she was born. When Jennifer is 30 years old, the bond will have earned 110% in interest. How much will the bond be worth when Jennifer is 30 years old?​

Answers

Answer:

105$

Step-by-step explanation:

We are told that she starts with 50$

We are also that after 30 years she earns 110% on interest

Given this information we need to find the value of the bond after the 30 years

To do so we take 110% of the initial value (50$) and add that to the initial value

So the answer = 110%(50) + 50

110%*50=55

55+50=105

So in 30 years the bond will be worth 105$

Mai’s mother was 28 when Mai was born. Mai is now 12 years old.
How old will they be then?

Answers

Answer:

Mai is 12 and Mai's mother would be 40.

40 hope this helps..

Find the volume of the rectangular prism. Write your answer in simplest form. No links please

Answers

Answer:

0.055m³

Step-by-step explanation:

V = w × h × l = 0.11 × 0.73 × 0.65 = 0.054611m³

I GIVE YOU BRAINLIEST!!!


The graph of function f is shown.




Function g is represented by the table.
x -1 0 1 2 3
g(x) 24 4 0 -4/5 -24/25

Which statement correctly compares the two functions?

A. They have the same x- and y-intercepts.
B. They have different x- and y-intercepts but the same end behavior as x approaches ∞.
C. They have the same y-intercept and the same end behavior as x approaches ∞.
D. They have the same x-intercept and the same end behavior as x approaches ∞.

Answers

ANSWER:

I would say B

BRAINLIEST PLEASE

Mark hits a tennis ball into the air. He uses the equation shown to approximate the
height, h, in feet, of the ball t seconds after he hits it.
h = -1612 +886 + 4
What does the 4 represent in Mark's equation?
A.
The ball was in the air for a total of 4 seconds.
B.
The ball landed 4 feet away from where Mark hit it.
C.
The ball was 4 feet above the ground when Mark hit it.
D.
The ball reached its maximum height 4 seconds after Mark hit it.

Answers

Answer:

C. The ball was 4 feet above the ground when Mark hit it.

Step-by-step explanation:

After he hit the tennis ball into the air, the ball was 4ft above the ground.

hope this helps and is right. p.s i really need brainliest :)

if my answer is wrong then I am incredibly sorry!

The radius of a circle is 17.8 ft. Find the circumference to the nearest tenth.

Answers

111.8? I think because the formula for circumference is c=2 pie R and with the information you provided the answer would be 111.84 but rounding it I think it would be 111.8 or I could be rounding the wrong place

Find the surface area of the square pyramid (above) using its net (below)​

Answers

Answer:

please where is the above square pyramid

Step-by-step explanation:

please I wish I could help you but your question is in complete

PLS HELPP!
In the diagram, PQ←→ ∥ RS←→
, and transversal t
intersects both lines.

Select all the true statements.

∡1 ≅ ∡4
because they are vertical angles

∡1 ≅ ∡8
because they are alternate exterior angles

∡1 ≅ ∡5
because they are corresponding angles

∡1 ≅ ∡3
because they are alternate interior angles

Answers

Answer: First three is correct. Angle 1 = Angle 3 is incorrect.

If 50% of a number is 100 and 20% of the same number is 40, find 70% of that number.

Answers

I think the answer is 140

Steps:
The number is 200 as 50% of this would be 100 so in order to work out 70% you will do:
10%=20
20 x 7=(70%)140

Cheese sticks that were previously priced at "10 for $1" are now "4 for $1". Find each percent change

Answers

Answer:

The price per cheese stick was increased by 150%.

The amount of cheese sticks per $1.00 has decreased by 60%.

Step-by-step explanation:

The price per cheese stick was $0.10

1.00 (dollar) divided into 10 (cheese sticks) gives you 0.1, which means each cheese stick costs $0.10

The current price per cheese stick is $0.25

1.00 (dollar) divided into 4 (cheese sticks) gives you 0.25, which means each cheese stick costs $0.25

That means the price per cheese stick was raised by 150%.

That also means the amount of cheese sticks you could buy for $1.00 has decreased by 60%.

Which equation represents a line that passes through the points (4, 5) and (6, 9)? A. y = 2x-3 B. y - 3x-7 C. y= x + 3 D. y- + x + 7​

Answers

Answer:

A) y=2x-3

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(9-5)/(6-4)

m=4/2

m=2

y-y1=m(x-x1)

y-5=2(x-4)

y=2x-8+5

y=2x-3

plss help if u do u get brainlist and help asap school bitterly almost done

Answers

Answer:

w+8²

p+30÷p²

4(9+y)

Step-by-step explanation:

Answer:

Answers are below.

Step-by-step explanation:

1. [tex]C^{3}[/tex]

2. A + C / 3

Second exercise:

1. w + (8 x 2)

2. 30 + p / p

3. 4 (9 + y)

hope this helps and is right :) p.s. i really need brainliest.

if my answers are wrong, then i am incredibly sorry!

Please help!!! I am being timed!!
Brainiest if corrected!!!

Answers

The third option is right because we plug in 1 for x

Answer:

D

Step-by-step explanation:

The starting number is 3

And they bring in 1 member each month

That can be shown with the last equation

Good luck!

Help me with this math I gotta get some serious help

Answers

Answer:

C

Step-by-step explanation:

What is the volume of the cylinder? Use 3.14 for T.

Answers

Answer:

251.2

Step-by-step explanation:

V=πr²h

3.14×4²×5

I will give brainliest to whoever gives correct answer first!
A short term loan of £60000 is taken for 15 weeks. Simple interest is charged at 17.5% p.a.
How much needs to be repaid altogether?

Answers

Answer:

Kahe be kaha se ba see u online ba hahahaha

Answer:

$ 100,000,000,000 is required to repay

The midpoint of AB is M(-6, 1). If the coordinates of A are (-7, -3) what are the coordinates of B?​

Answers

Answer:

Step-by-step explanation:

Can someone tell me if this is a adjacent ,vertical or linear

Answers

Answer:

linear

Step-by-step explanation:

Two angles are said to be linear if they are adjacent angles formed by two intersecting lines.

sum of angles on a straight line is 180° thus linear angle is also be 180° when the two angles a and b combine

can you help me with this, please?​

Answers

Answer:

its D i do belive

Step-by-step explanation:

Answer:

28in, 195in, 197in

Step-by-step explanation:

There's no "supereasy" way to solve it, except by computation or approximation.

e.g. 2 3 6 couldn't work, because 2+3 < 6 so it's not even a triangle

125^2 cannot equal 122^2 + 30^2, because 125^2 is odd and 122^2 and 30^2 are even

23^2 + 18^2 = 529 + 324 < 900 < 31^2

So it has to be the last one, and after verification we find it checks out and 28^2 + 195^2 = 197^2

factor the expression using gcf 98-70​

Answers

Answer:

The Greatest Common Factor (GCF) for 70 and 98, notation CGF(70,98), is 14.

Step-by-step explanation:

What is the area of the trapezoid below?

Answers

22 centimeters is the answer

Harmony left her dad’s store to go home at twenty to seven in the evening. Forty minutes later, she was home. What time was it when she arrived home?

Answers

Answer:

8:00 in the morning .....

Answer:

7:20 pm

Step-by-step explanation:

the phrase "twenty to seven in the evening" implies that is twenty minutes before 7:00 pm, meaning the current time was 6:40 pm.

Adding the 40 minutes it took Harmony to get home, the time would have been 7:20 pm

GEOMETRY HELP NEEDED!! find the value of x

Answers

Should be 8 since it's symmetrical

x is 8 because everything congruent

A picture of Carol's soccer field and its dimensions is shown. Carol ran the boundary of the field three times.
. 120 m-
85 m
How far did Carol run in total?

Answers

205 to the total of the run

The rabbit population in Scott County, which is currently at 2,900 rabbits, is increasing by
10% each year. How many rabbits will there be in 8 years?
If necessary, round your answer to the nearest whole number.

Answers

Answer:

6216

Step-by-step explanation:

This problem deals with exponential growth.

Final value: F

Present (initial) value: P

Rate of growth: r

Time in years = t

[tex] F = P(1 + r)^t [/tex]

[tex] F = 2900(1 + 0.1)^8 [/tex]

[tex] F = 6216 [/tex]

Answer: 6216

Factor x^3 +5x^2- 24x

Answers

Step-by-step explanation:

(−3)(+8)

Use Substitution, what is the solution to the system 5x + y = 12 and 2x + Зу = -3

A (2,-3)
B (-3,3)
C (3,-3)
D (2,2)

Answers

Answer:

C

Step-by-step explanation:

Answer would be c sorry if wrong

can someone please explain, i really need help

Answers

Answer:

x = 42.5

Step-by-step explanation:

A triangle formed inside of a circle using the diameter as one of its side lengths is a right triangle

The right angle would be the angle opposite of the diameter (∠C)

A right angle has a measure of 90°

That being said we use this equation to solve for x

90 = 2x + 5

step 1 subtract 5 from each side

90 - 5 = 85

5 - 5 cancels out

now we have 85 = 2x

step 2 divide each side by 2

85/2=42.5

2x/2=x

we're left with x = 42.5

write five rational numbers less than -3​

Answers

-4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20

Find the area of a triangle​

Answers

Answer:

B.17.5cm²

Step-by-step explanation:

S=a+b+c/2=

5+8+7/2=10

S=10

Area of the triangle=[tex]\sqrt{3(5-a)(5-b)(5-c)}[/tex]

⇒[tex]\sqrt{10(10-5)(10-8)(10-7)}[/tex]

⇒[tex]\sqrt{10*5*2*3}[/tex]

⇒[tex]\sqrt{300}[/tex]

⇒17.5cm²

hope it helps...

have a great day!!

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