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Testing of Hypothesis

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A lab technician is tested for her consistency by taking multiple measurements of cholesterol levels from the same blood sample. The target accuracy is a variance in measurements of 1.2 or less. If the lab technician takes 16 measurements and the variance of the measurements in the sample is 2.2, does this provide enough evidence to reject the claim that the lab technician's accuracy is within the target accuracy?

Help needed with the null and alternate hypothesis, test value, and if there is evidence to support the writers claim?

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The solution contains the detailed explanation of a testing of hypothesis problem using traditional and p-value approach.

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