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.
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.
Enter the slope-intercept equation of the line shown below.
Jack and Jill each opened accounts that earn 5% interest compounded annually. Jack deposited $2500 and Jill deposited $3000. No additional money was deposited or withdrawn. At the end of 6 years, what will be the combined balance of these two accounts? (Round to the nearest cent)
Answer:
3,850
Step-by-step explanation:
have a good day!!
The answers to any of these would be really helpful
Answer:
Step-by-step explanation:
Q9) Surface Area of a cylinder
= 2πr(r + h)
Diameter = 12cm , Radius = Diameter/2 = 12 cm/2
r = radius = 6cm
h = height = 10 cm
Surface area = 2 × π × 6(6 + 10)
= 603.18579 cm²
Approximately = 603.2 cm²
Q11) Volume of a rectangular prism
Length × Width × Height
Length = 6.5cm
Width = 8.5 cm
Height = 4 cm
Volume = 6.5 cm × 8.5 cm × 4 cm
Volume = 221 cm³
Q12) Volume of the cylinder = πr²h
r = radius = 1.7m
h = height = 9 m
Volume = π × 1.7 × 9
= 81.71 m³
Approximately = 81.7 m³
Q13) Volume of the cylinder = πr²h
Diameter = 0.8m, Radius = Diameter/2 = 0.8m/2
r = radius = 0.4m
h = height = 1.5 m
Volume = π × 0.4 × 1.5
= 0.75 m²
Approximately = 0.8 m³
which of these is the BEST theme for this poem?
Answer:
the answer is if we don't act the beauty of nature may disappear
Step-by-step explanation:
This is so because nature is fragile and needs to be taken care of properly thus this poem portrays various ways we are endangering nature and it's beautiful aesthetic features
Can someone help me please ☺
Find the cost of fencing a park with the length of 175 meters and a width of 125 meters. The cost is $12. per meter.
Answer:
The answer is $3600 I hope this is helpful.
Find the circumference of the circle. Use 3.14 for π. Round to the nearest hundredth, if necessary.
Answer:
There is no circle
Step-by-step explanation:
If you post the circle, I will help
Make sure to attach a file of the photo (Please no links)
Which number line represents the solution for 5x greater than 30
It's G bc of the full dot and the line going up.
HELP ME PLEASE I'll give brainless.
Answer:
<QRP=42 degrees
Step-by-step explanation:
Since the angles are sequential, they are the same. This is because the transversal cuts across parallel lines, creating said sequential angles.
Answer:
42 degrees since QS&TV are parallel
i need help with this asap
decide whether each if the pairs if angles given and illustrated are
alternate exterior
alternate interrior
correspondkn
vwrtical
1,2,3,4,5,6
Answer: i think its alternate interior
Don’t know what the answer is, help
Answer:
A
Step-by-step explanation:
143.6° and x are adjacent angles and sum to 180° , then
x + 143.6° = 180° ( subtract 143.6° from both sides )
x = 36.4° → A
there is 300 fruit in a basket 50 of them are bananas what percentage is not bananas
Answer:
83.33%
Step-by-step explanation:
300 - 50 = 250
250/300 = 0.8333 or 83.33%
Help me with this math problem please:):)
find to the nearest degree the size of each angle of a regular heptagon
plsss i need answers nowwww
Answer:
That's the question
Step-by-step explanation:
what is the correct answer to x^2+y^2+4x-2y=-1
Answer:
hold on the answer in the picture
Step-by-step explanation:
sry for it being so blurry
Greg has two coupons for a bicycle.
Coupon A: $19 rebate on a $81 bicycle
Coupon B: 20% off of a $81 bicycle
Choose the coupon that gives the lower price.
The price of Coupon A will be less than the price of Coupon B. Coupon A gives the lower price.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
Greg has two coupons for a bicycle.
Coupon A: $19 rebate on an $81 bicycle. Then the price of a bicycle will be
⇒ $81 - $19
⇒ $62
Coupon B: 20% off of an $81 bicycle. Then the price of a bicycle will be
⇒ $81 x 0.80
⇒ $64.8
The price of Coupon A will be less than the price of Coupon B. Coupon A gives the lower price.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
Plz someone answer this for me asap !
Find the perimeter of each shape
Equation :
X:
Perimeter:
Answer:
The equation is;
4(2.5x-3) = 3(2x-2)
The value of x is 1.5
Step-by-step explanation:
Mathematically, the perimeter of a square is simply the product of the length of the side and 4
Secondly, the perimeter of an equilateral lateral triangle is the product of the length of its side and 3
Thus, mathematically, we have it that;
4(2.5x-3) = 3(2x-2)
10x - 12 = 6x -6
10x -6x = -6 + 12
4x = 6
x = 6/4
x = 1.5
The number of points Jaden scored in a game is less than 45, and is also a multiple of 7. How many points could Jaden have scored
Answer:
35
Step-by-step explanation:
The first few multiples of 7 are:
× 7 = 7
× 7 = 14
× 7 = 21
× 7 = 28
× 7 = 35
× 7 = 42
× 7 = 49
× 7 = 56
× 7 = 63
× 7 = 70
The number of points Jaden scored in a game less than 45, and a multiple of 7 is 35 points
How to find how many points Jaden scored?The multiples of 7 are;
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105......
Recall,
The number of points Jaden scored in a game is less than 45
From the options, we are left with 17 and 3517 is not a multiple of 7Therefore, the number of points Jaden scored in a game less than 45, and a multiple of 7 is 35 points
Learn more about multiples of numbers:
https://brainly.com/question/85194
Is this adjacent vertical or linear can someone plz tell me the answer
Answer:
vertical
Step-by-step explanation:
its going straight up
someone please helppp
Answer:
7
Step-by-step explanation:
We know that alternate angles ( Z angles) are equal
So, the angle that is adjacent to (13x + 2) = (12x+3)
First, calculate the measure of the angle adjacent to (13x+2)
We know that the angles on a straight line add up to 180 degrees.
Therefore, the angle adjacent to (13x+2) = 180-(13x+2)
Simplify this to: 178-13x
So, now we have an equation
178 - 13x = 12x + 3
Rearrange to find the value of x
25x = 175
x = 7
Hope this helps.
See image for question and answer choices
Answer:
B.
Step-by-step explanation:
So, lets remember a few things first.
#1: The formula for finding the answer is A^2+B^2=C^2
#2: A is the opposite side, B is the adjacent side, and C is the hypotenouse side.
Now lets plug in what we already know, and see if we canf igure out the annswer:
A^2+12^2=13^2
Now I am going to stop us here. This is your equation that will find the answer. In your question, they use x^2, A^2 is a variable you can use instead. But looking at this, answer B and my equation I wrote above are exactly the same.
If you want, here is how I further solved it, this might give you a better grasp on what to do for future problems:
Ok, not too bad, the A is the unkown value, which is the opposite side.
Now, how do we figure this out? Well, we just need to sovle for A.
To do this, lets clean up our equation by first sqauring all the values(except for the unkown):
A^2+144=169
Ok, that looks better, now lets just subtract the adjeacent side(b), which is 144, from the hypotenouse side(c), which is 169.
This will now look like:
A^2=25(169-144=25)
Ok, just one more step to go. Just square root both sides of the equation, this way, we will get ride of the ^2 on A(opposite side), and get A alone.
([tex]\sqrt{A^2}=A[/tex])=([tex]\sqrt{25}=5[/tex])
A=5
This is your answer.
Name the marked angle in 2 different ways.
M
L
J
K
Answer:
Angle J and angle MJK or maybe right angle....
These are the three ways...
Hope it helps
Step-by-step explanation:
I WILL GIVE BRAINLIEST!!!
The average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below.
Number of Years Since 2010 Avg. Number of Subscribers
0 320,000
1 384,000
2 460,800
3 552,960
4 663,552
5 769,262
The percent increase in the average number of subscribers each year since 2010 was ____%.
Answer:
the average number of subscribers to the online magazine in 2010 was 320,000
Marco mixed 2 teaspoons of sugar and 1 teaspoon of milk into his coffee. What is the ratio of teaspoons of sugar
to teaspoons of milk?
A. 2 : 1
B. 1 : 2
C. 1 : 3
D 3 : 2
Answer:
A..................... is answer
The correct answer is: A. 2 : 1
Raymond used 36 cubes to build the first layer of a rectangular prism. The edge length of each cube was 1 inch. The finished prism had a total of 8 layers. What is the volume of Raymond's prism in cubic inches?
Answer:
[tex]Volume = 288in^3[/tex]
Step-by-step explanation:
Given
[tex]Base\ Cubes = 36[/tex]
[tex]Layers = 8[/tex]
Required
The volume of the prism
The number of base cubes represents the base area and the number of layers represents the height of the prism.
So, the volume is calculated as:
[tex]Volume = Base\ Cubes * Layers[/tex] i.e Base Area * Heights
[tex]Volume = 36 * 8[/tex]
[tex]Volume = 36in^2 * 8in[/tex]
[tex]Volume = 288in^3[/tex]
Joann decides to paint one wall in her room with blackboard paint. The wall has the dimensions shown. A can of paint covers 25 square feet. How many cans of blackboard paint does Joann need for the wall.
*see attachment for the diagram of the wall
Answer:
6 cans
Step-by-step explanation:
First, let's calculate the area of the wall to be painted = area of a rectangle
Area of the rectangle = length*width
From the diagram,
Length = 13 ft
Width = 10 ft
Area = 13*10 = 130 ft²
Given that 1 can of paint covers 25 ft²,
Number of can of paints that will cover 130 ft² = 130/25 = 5.2
This means we will need more than 5 cans. So Joan will need to get roughly 6 cams of blackboard paint.
hurry pleaseeeeeeeeeeeeeeeeeeeeeee
I NEED HELP WITH THIS MATH
Answer:
v = 120
Step-by-step explanation:
The right angle is egual to 180-39-v, so it is: v-141
U now that the sum of the internal angles of a triangle is 180°.
180 = (v-48)+(v)+(v-141)
180 = 3v - 180
3v = 360
v = 360/3
v = 120
Answer:
89 = v
Step-by-step explanation:
not completely sure how i got it
good luck
multiple choice pls help!
(Links = report )
Answer:
120 in² hope it helped lol
Are the expressions equivalent? Select all that apply.
A:3n + 2 - 4n and 2 - n
B:5(3x + 2) and 15x + 10
C:2(r×r×r) and 6r
D:-8(2z – 3) and -16z - 3