Pete’s Pizzeria advertises that they will deliver your pizza within

15 minutes of placing an order or it is free of charge. A sample of 25 customers is selected randomly. The average delivery time in the sample was 13 min. with a sample standard deviation of 4 min. We want to know whether Pete’s Pizzeria can make this claim or not at a 5% significance level. Calculate the P-Value for this test.

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