Question

Hello, How do you set up and solve? Thank You!

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 ...

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