Find the percentage of customers

Question

You perform a test to find the percentage of customers who prefer fragrance free laundry soap. What type of hypothesis test would you use?

Answer 1

If you are testing whether the percentage of customers in the population equals a specific value, then you would be performing a one-proportion z-test. The proportion would be equal to the percentage/100.

Ho: p = value Ho: p = value Ho: p = value

Ha. p > value Ha: p < value Ha: p != value

(right tail test) (left-tail test) (two-sided test)