2. The following sample information shows the number of defective units produced on the day shift and the afternoon shift for a sample of four days last month. Day 1 2 3 4 Day shift Afternoon shift 10 12 15 19 8 9 12 15 a) Compute the differences of the number of defective units produced between the two shifts. b) What is the mean of the differences?

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2. The following sample information shows the number of defective units produced on the day
shift and the afternoon shift for a sample of four days last month.
Day
3
4
Day shift
Afternoon shift
10
12
15
19
8
12
15
a) Compute the differences of the number of defective units produced between the two shifts.
b) What is the mean of the differences?
Transcribed Image Text:2. The following sample information shows the number of defective units produced on the day shift and the afternoon shift for a sample of four days last month. Day 3 4 Day shift Afternoon shift 10 12 15 19 8 12 15 a) Compute the differences of the number of defective units produced between the two shifts. b) What is the mean of the differences?
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