Question

Suppose a clothing store wants to determine the current percentage of customers who are under the age of thirty. How many customers should the company survey in order to be 98% confident that the estimated (sample) proportion is within 2 percentage points of the true population proportion of customers who are under the age of thirty?

z0.10	z0.05	z0.025	z0.01	z0.005
1.282	1.645	1.960	2.326	2.576

Use the table of values above.

Select the correct answer below:

15

30

1,028

2,055

3,382

6,763