An online survey company claims their surveys take on average less than 20 minutes to complete. Before running a new ad campaign, they need data to prove that the average completion time is actually less than 20 minutes. The company randomly samples 15 surveys taken in the last week and found a sample mean of 17 minutes with a sample standard deviation of 5 minutes. Using the decision you found in the previous question. What is the correct conclusion for this test? There is enough evidence to show that the average survey completion time is less than 20 minutes. There is enough evidence to show that the average survey completion time is 20 minutes. There is not enough evidence to show that the average survey completion time is 20 minutes. There is not enough evidence to show that the average survey completion time is less than 20 minutes.
An online survey company claims their surveys take on average less than 20 minutes to complete. Before running a new ad campaign, they need data to prove that the average completion time is actually less than 20 minutes. The company randomly samples 15 surveys taken in the last week and found a sample mean of 17 minutes with a sample standard deviation of 5 minutes.
Using the decision you found in the previous question. What is the correct conclusion for this test?
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There is enough evidence to show that the average survey completion time is less than 20 minutes. |
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There is enough evidence to show that the average survey completion time is 20 minutes. |
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There is not enough evidence to show that the average survey completion time is 20 minutes. |
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There is not enough evidence to show that the average survey completion time is less than 20 minutes. |
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