Question
The management of a caf wants to be confident that their coffee temperature is consistent through various circumstances such as long pick-up time, added milk,
The management of a caf wants to be confident that their coffee temperature is consistent through various circumstances such as long pick-up time, added milk, etc. To do so, they decided to undertake a statistical process control initiative to determine the consistency of temperature of different types of coffee. Ten random latt samples were selected every hour during a seven-hour shift, and the temperature of each cup of coffee was recorded. The following data was collected; the temperature is measured in degrees Celsius.
Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 | Sample 6 | Sample 7 | |
116 | 103 | 116 | 106 | 124 | 98 | 125 | |
114 | 101 | 119 | 109 | 104 | 93 | 124 | |
109 | 117 | 117 | 117 | 106 | 96 | 116 | |
124 | 125 | 122 | 124 | 125 | 93 | 103 | |
124 | 108 | 120 | 119 | 114 | 98 | 117 | |
116 | 106 | 114 | 104 | 116 | 93 | 101 | |
109 | 103 | 109 | 104 | 109 | 98 | 120 | |
124 | 104 | 119 | 114 | 108 | 98 | 104 | |
111 | 120 | 108 | 112 | 111 | 100 | 119 | |
119 | 103 | 109 | 122 | 103 | 100 | 114 | |
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