Use the given data to find the minimum sample size required to estimate a population proportion or percentage. margin of error: seven percentage points, confidence level 95%, from a prior study,^p is estimated by the decimal equivalent of 42%

n= (round to the nearest integer.)

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval , we have the following confidence interval of proportions.

In which

z is the zscore that has a pvalue of .

The margin of error is:

95% confidence level

So , z is the value of Z that has a pvalue of , so .

In this problem, we have that:

We have to find n

So, rounded to the nearest integer

1. minimum

2. 6400

3. eight

hope this !