  Suppose 378 of 600 voters support a Presidential candidate. What is thevariance of the sampling distribution of the proportion?

Question

Hello, How do you set up and solve? Thank You! help_outlineImage TranscriptioncloseSuppose 378 of 600 voters support a Presidential candidate. What is the variance of the sampling distribution of the proportion? fullscreen
Step 1

Variance of the sampling distribution of the proportions:

Consider p-hat as the sample proportion and n as the sample size. If the above statistics are known, then the variance of the sampling distribution of the proportions is obtained using the formula given below:

Step 2

Obtain the sample proportion:

It is given that among a sample of 600 voters, 378 voters support a Presidential candidate.

Total number voters is n = 600.

The number of voters support a Presidential candidate is x = 378.

The sample proportion of voters support a Presidential candidate is obtained as follows:

Step 3

Variance of the sampling distribution of the proportions:

Here, p-hat = 0.63 and n = 600.

The variance of ...

Want to see the full answer?

See Solution

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Other 