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A pizza delivery chain advertises that it will deliver your pizza in 20 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 20 minutes. For the simple random sample of 15 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 22.7 minutes with a standard deviation of 5.0 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

A pizza delivery chain advertises that it will deliver your pizza in 20 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 20 minutes. For the simple random sample of 15 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 22.7 minutes with a standard deviation of 5.0 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Step 2 of 3:

Compute the value of the test statistic. Round your answer to three decimal places.

Step 3 of 3:

Draw a conclusion and interpret the decision.

A pizza delivery chain advertises that it will deliver your pizza in 20 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 20 minutes. For the simple random sample of 15 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 22.7 minutes with a standard deviation of 5.0 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables Кeypad Keyboard Shortcuts
Transcribed Image Text:A pizza delivery chain advertises that it will deliver your pizza in 20 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 20 minutes. For the simple random sample of 15 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 22.7 minutes with a standard deviation of 5.0 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. Answer E Tables Кeypad Keyboard Shortcuts
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