i need help solving this problem

personal scanner to create the PDF. In a random sample of 50 cross-country runners, the mean body mass index (BMI) was 27.7 and the standard deviation was 6.12. Construct a 99% confidence interval for the mean BMI of all cross-country runners. 1. Determine the critical value: show all work to determine this. (3 points) 2. Calculate the margin of error: show the formula that you used. Round the margin of error to the tenth. (3 points) 3. Calculate the confidence interval: show the formula that you used. Write the confidence as an interval containing /. (2 points) 4. Interpret the results: BMI is unit less. (3 points)