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Feliz [49]
3 years ago
13

Which sampling method is MOST appropriate in estimating the average number of votes for each candidate in an election across a c

ounty of three towns if town A has one million retirees, town B has two million business owners, and town C has three million office workers?
A. Simple random sampling, because the people in the sample are accessible and available.

B. Stratified sampling, because there are specific subgroups to investigate.

C. Systematic sampling, because it is difficult to identify items using a simple random sampling method.

D. Cluster sampling, because the studied population is spread across a wide area such that simple random sampling would be difficult to implement

E. All the above sampling methods
Mathematics
1 answer:
kaheart [24]3 years ago
4 0

Answer:

B. Stratified sampling, because there are specific subgroups to investigate.

Step-by-step explanation:

Stratified Sampling is a sampling method and is used when the population has subgroups with different characteristics. Random sampling is applied in each of the sub-groups <em>proportional </em>to their size and then these samples <em>combined </em>together to create sample of the study.

Since there are three towns with people from different occupations ( retirees,business owners, office workers), it is better to use stratified sampling method.

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A sphere and a cylinder have the same radius and height. The volume of the cylinder is 27 xft?
attashe74 [19]

Answer:

Volume of sphere =\frac{2}{3}(27\pi) ft^3

Step-by-step explanation:

We are given that

Radius of sphere=Radius of cylinder=r

Height of sphere=Height of cylinder=h

Height of sphere=h=Diameter of sphere=2r

Volume of cylinder=27\pi ft^3

Volume of cylinder=\pi r^2 h

Using the formula

Volume of cylinder=\pi r^2(2r)=2\pi r^3=27\pi

Volume of sphere=\frac{4}{3}\pi r^3

Using the formula

Volume of sphere=\frac{2}{3}\times 2\pi r^3=\frac{2}{3}(27\pi)

Hence, the volume of sphere =\frac{2}{3}(27\pi) ft^3

6 0
3 years ago
"three food trucks are set up at points a, b, and c. each of the three trucks is the same distance from the food distributor. at
jolli1 [7]

Answer:

circumcenter

Step-by-step explanation:

Suppose the three food trucks points a,b,c are joined together in such a way that the form a triangle. The perpendicular bisectors of the triangle are concurrent . The point of concurrency is called <u>circumcenter.</u>

According to the circumcenter theorem the points ( vertices of the triangle  a,b,c) are equidistant from the center D ( point of concurrency) called the circumcenter.

As the food distributor is equidistant from each of the trucks it lies at the circumcenter point of concurrency.

The drawing is just a generalizations to give an idea. It does not show actual bisectors perpendicular.

3 0
3 years ago
Alejandro surveyed his classmates to determine who has ever gone surfing and who has ever gone snowboarding. Let A be the event
victus00 [196]

Answer:

{A and B are independent events}, P(A|B)=P(A)=0.16

Step-by-step explanation:

First of all we need to know when does two events become independent:

For the two events to be independent,  P(A|B)=P(A) that is if condition on one does not effect the probability of other event.

Here, in our case the only option that satisfies the condition for the events to be independent is  P(A|B)=P(A)=0.16.. Rest are not in accordance with the definition of independent events.

3 0
3 years ago
Read 2 more answers
Solve for k.<br> 6 1<br> 2k - 6 - 3
Taya2010 [7]

Answer:

k = 6.

Step-by-step explanation:

k = 6

2k = 12

12 - 6 - 3 = 3

k = 1

2k = 2

2 - 6 - 3 = -7

So, the answer is k = 6 because it makes more sense.

7 0
3 years ago
the left and right page numbers of an open book are two consecutive integers whose sum is 211. find these page numbers.
Likurg_2 [28]

Answer:

105 and 106

Step-by-step explanation:

The consecutive pages are such that the difference between the numbers of these pages is 1. As such, if the number on the first of the two pages is x, the second will be x + 1.

Hence, given that the sum of the numbers two pages is 211,

x + x + 1 = 211

2x = 210

x = 105, the next

= 105 + 1

= 106  

7 0
3 years ago
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