A random sample of 10 employed was selected and each employee used each of two machines for the same length of time. The machine used first was selected as random. The number of items purchased was:
Employee: 1 2 3 4 5 6 7 8 9 10
Method 1. : 111 113 120 99 129 107 108 96 87 85
Method 2. : 92 113 132 67 125 101 90 84 60 72
Test whether there is evidence of a significant difference between the machines in the mean number of items produced.
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yes, 11.9. The averages of the two were 105.5 for #1, and 93.6 for #2
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