Cupcakes are sensitive totemperature and humidity. Cupcakes must be cooked at a consistenttemperature. To test the oven before using it to bake Cupcakes, wetook temperature samples at regular intervals. The followingmeasurements, in degrees Celsius, are the results.
Sample | X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 |
1 | 172 | 163 | 164 | 175 | 168 | 161 | 168 | 160 |
2 | 172 | 162 | 163 | 173 | 172 | 174 | 172 | 176 |
3 | 165 | 179 | 179 | 178 | 160 | 169 | 165 | 172 |
4 | 163 | 174 | 167 | 177 | 176 | 173 | 178 | 175 |
a. Compute the upper controllimit of x bar chart.
b. Compute the lower controllimit of x bar chart.
c. Compute the upper controllimit of R chart.
d. Compute the lower controllimit of R chart.
e. is the process undercontrol
