the x chart is wrong. please help, thank you!

Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results obtained: The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to b in control. The times to complete the transactions were measured. The means and ranges of the mortgage process transaction times, measured in days, are as follows: Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results obtained: Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. a. Construct the control charts for the mean and the range, using the original 15 samples. Set up the R-chart by specitying the center line and three-sigma control limits below. (Enter your responses rounded to two decimal places.) Reference limits for the x-chart and R-chart subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were neasured and the following results obtained: Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. a. Construct the control charts for the mean and the range, using the original 15 samples. Set up the R-chart by specifying the center line and three-sigma control limits below. (Enter your responses rounded to two decimal places.) Set up the x-chart by specifying the center line and three-sigma control limits below. (Enter your responses rounded to two decimal places.)