Part 1 of 3 Points: 0 of 1 Save In a random sample of six mobile devices, the mean repair cost was $90.00 and the standard deviation was $11.50. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 95% confidence interval for the population mean. Interpret the results. The 95% confidence interval for the population mean u is (). (Round to two decimal places as needed.) Help me solve this View an exam