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Mathematics, 03.07.2020 23:01 jaybuck5570
It has been suggested that night shift-workers show more variability in their output levels than day workers (σ2N > σ2D). Below, you are given the results of two independent random samples.
Night-shift Day-shift
Sample-size 9 8
Sample-mean 520 540
sample-variance 38 20
Required:
a. State the null and alternative hypotheses to be tested.
b. Compute the test statistic.
c. Determine the p-value.
d. At 95% confidence, what do you conclude?
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