Question: Each day for 200 days, a quality engineer samples 144 fuses rated at 15 A and measures the amperage at which they burn out. He

Each day for 200 days, a quality engineer samples 144 fuses rated at 15 A and measures the amperage at which they burn out. He performs a hypothesis test of H0 :μ = 15 versus H1 :μ ( 15, where μ is the mean burnout amperage of the fuses manufactured that day.
a. On 10 of the 200 days, H0 is rejected at the 5% level. Does this provide conclusive evidence that the mean burnout amperage was different from 15 A on at least one of the 200 days? Explain.
b. Would the answer to part (a) be different if H0 had been rejected on 20 of the 200 days? Explain.

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