A researcher was interested in the number of hours spend surfing social media during a day by student. He selected a random sample of 25 students and found the mean number of hours per day was 6.5 and the standard deviation was 1.25. Assuming the sample is from a normally distributed population. a. Determine the point estimator of µ. b. Verify the required assumptions. c. Construct a 95% confidence interval for the population mean mu for the number of hours per day, and interpret the result.
Added by Margarita D.
Step 1
The point estimator of the population mean µ is the sample mean, denoted by x̄. In this case, the sample mean is 6.5 hours per day. Therefore, the point estimator of µ is x̄ = 6.5 hours per day. Step 2: Verify the required assumptions. The assumptions for Show more…
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