The manager of The Cheesecake Factory in Memphis reports that on six randomly selected weekdays, the number of customers served was 80, 250, 125, 170, 190, and 165. She believes that the number of customers served on weekdays follows a normal distribution. Click here for the Excel Data File Calculate the margin of error with 99% confidence. Note: Round your final answer to 2 decimal places. Construct the 99% confidence interval for the average number of customers served on weekdays. Note: Round your final answers to 2 decimal places. How can the margin of error reported in part a be reduced? multiple choice Increase the sample size Decrease the sample size Increase the standard deviation Increase the confidence level