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[See Steps] Refer to Exercise 7.5, where the number of unremovable defects, for each of n = 45 displays, has X̄ = 2.467 and s = 3.057 unremovable defects.

Question: Refer to Exercise 7.5, where the number of unremovable defects, for each of n = 45 displays, has $\bar{X}$ = 2.467 and s = 3.057 unremovable defects.

Conduct a test of hypotheses with the intent of showing that the mean number of unremovable defects is less than 3.6. Take a = 0.025.
Based on your conclusion in part (a), what error could you have made? Explain in the context of the problem.

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[See Steps] Refer to Exercise 7.5, where the number of unremovable defects, for each of n = 45 displays, has X̄ = 2.467 and s = 3.057 unremovable defects.

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