Managerial Report for Quality Associates, Inc. Part 1
1. The hypothesis testing results are shown below:
Only sample 3 leads to the rejection of the hypothesis H0: µ = 12.
These means corrective action is required for sample 3.
The other samples indicate H0 cannot be rejected and from the table we
can tell that the process is operating in a correct manner.
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Sample 3 with x = 11.89 shows the process is operating below the desired
mean.
Sample 4 with x = 12.08 is on the high side, but the p-value of .03 is not
sufficient to reject H0.
2. The sample standard deviations for all four samples are in the ranges of
.20 to .22.
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It shows that the process population standard deviation assumption of .21
is good as a subject.
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