Question

Which statistical test would be appropriate for testing the hypothesis that the average delivery time for goods, after placing an order over the phone, is greater than 25 minutes in the population?

A. Linear
B. T-test
C. ANNOVA
D. Z-Test

Answer 1

Explanation:

For testing the hypothesis about the average delivery time for goods being greater than a specific value (25 minutes in this case), a **Z-Test** would be appropriate.

The Z-Test is commonly used when you have a known population standard deviation and you are comparing the sample mean to a known population mean. In this case, you are comparing the average delivery time (sample mean) to the specified value of 25 minutes (population mean).

So, the correct answer is:

D. Z-Test