A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minutes. If a significance level of 0.05 is used, test the store's claim using P-values. Your answer needs to include the following: Null Hypothesis: Alternate Hypothesis: P-Value: Conclusion: Interpretation
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5 minutes. Alternate Hypothesis (H1): The mean waiting time is less than 3.5 minutes. We are given: Sample size (n) = 20 Sample mean (x̄) = 3.7 minutes Sample standard deviation (s) = 0.8 minutes Population mean (μ) = 3.5 minutes We can use the formula for the Show more…
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A store manager claims that the mean amount of time customers spend waiting in line is less than the 3.7 minutes. You wish to test this claim. The mean waiting time for a random sample of 85 customers is 3.3 minutes with a standard deviation of 0.8 minutes. What is the test statistic? 4.61 -0.50 -4.61 1.645
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