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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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Let the maximum number of pages Jennifer can have be = x

Amount Jennifer has (P) = $62.10

Given equation is :

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Price is given = 62.10 , so equation is :

62.10=(20+0.5x)+0.15(20+0.5x)

62.10=20+0.5x+3+0.075x

62.10=23+0.575x

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A baseball team plays in a stadium that holds 50000 spectators. When the ticket price is $10, the average attendance is 27000. W
crimeas [40]

Answer:

the answer is below

Step-by-step explanation:

Demand seems to be based on price.

Therefore we must consider two things:

that "x" is equal to the price and that "y" is equal to the average attendance.

Thus:

the two points would be:

(x1, y1) = (10,27000)

(x2, y2) = (6.39000)

The slope of a straight line is given by:

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

we replace:

m = (39000 - 27000) / (6 - 10) = 12000 / -4 = -3000

The equation of a straight line can be expressed like this

y = m * x + b.

where

m is the slope and b is the y-intercept.

we replace

y = -3000 * x + b.

To solve for b, replace x and y with the value of one of the points on the line.

We choose (6.39000). and we replace:

39000 = -3000 * 6 + b

39000 = -18000 + b

39000 + 18000 = b

b = 57000.

if we replace we have:

the equation becomes y = -3000 * x + 57000

since it is the demand and * x is the price.

t = d (x), therefore the equation becomes

d (x) = -3000 * x + 57000.

d (x) = 57000 - 3000 * x.

when x = 0, the price is 0 and the demand will be 57000, which will be more than the stadium can contain because the stadium can only contain 50,000.

So:

when x = 6, the price is 6 and the demand is 57000 - 18000 = 39000.

when x = 10, the price is 10 and the demand is 57000 - 30000 = 27000.

6 0
3 years ago
A rectangular park has 2 paths of width 2m running across it. What is the total area covered by the 2 paths ?
astra-53 [7]

Answer:

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