For Problems 1 - 5, perform each hypothesis test. Assume that all random samples had an equal chance of being chosen. For each problem, complete the following steps: 3. A computer program designer has developed an online questionnaire that she believes will take a mean of 15 minutes to complete. Suppose that she samples 35 volunteers and finds that the mean time to complete the questionnaire is 14.0 minutes. Determine if there is sufficient evidence to conclude that the mean completion time for the online questionnaire differs from its intended duration. Use a 0.05 level of significance and assume that the population standard deviation is known to be 2.5 minutes.

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A:

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A: Rejection rule:

Q: The mean of 5 observations is 4.4 and the variance is 8.24. If the three of the five observations…

A:

Q: For Problems 1 - 5, perform each hypothesis test. Assume that all random samples had an equal chance…

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