Exercise $19-8($Algo$)($LO$19-5)$

A new industrial oven has just been installed at Piatt Bakery. To develop experience regarding the oven temperature, an inspector

reads the temperature at four different places inside the oven each half hour starting at $8$:$00$ a$.$m$.$ The last reading was at $10$:$30$ a$.$m$.,$

for a total of six samples. The first reading, taken at $8$:$00$ a$.$m$.,$ was $349$ degrees Fahrenheit. $($Only the last two digits are given in the

following table to make the computations easier.$)$

Click here for the Excel Data File

a$.$ On the basis of this initial experience, determine the control limits for the range. $($Leave no cells blank $-$ be certain to enter $"0"$

wherever required. Round your intermediate calculations and final answers to $2$ decimal places.$)$

Answer is not complete.