Mathematics, 06.12.2019 04:31 dadonelson2109
Your local pizza chain claims that the delivery time of their pizzas is normally distributed with a mean of 30 minutes and standard deviation of 10 minutes. twenty of your friends in different locations order pizzas and the average delivery time is 42 minutes with standard deviation of 10 minutes. compute a one-sample t statistic. do you have a reason to disbelieve the chain’s claim?
Answers: 3
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