An online food delivery service in metro manila claims that the delivery time is not greater than 30 minutes. But a certain customer opposed the claim and found that the average time in the past 29...

Extracted text: An online food delivery service in metro manila claims that the delivery time is not greater than 30 minutes. But a certain customer opposed the claim and found that the average time in the past 29 delivery services is 32 minutes with a variance of 16. Perform a hypothesis testing with a = 0.05 to see if the claim is correct.