Use the t-distribution to find a confidence intervalfor a mean μ given the relevant sample results. Give the best pointestimate for μ, the margin of error, and the confidence interval.Assume the results come from a random sample from a population thatis approximately normally distributed.
A 95% confidence interval for μ using the sample results x¯=89.9,s=9.3, and n=42
Round your answer for the point estimate to one decimal place, andyour answers for the margin of error and the confidence interval totwo decimal places.
point estimate =
margin of error =
The 95% confidence interval is
