a. Is there evidence to support the claim that working hours of the PhD student exceeds 13 hours? Use a =0.05. b. What is the P-value for the test in part (a)?

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Q: A population with a mean of u = 8 has EX 40. How many scores are in the population?

A: From the provided information, Mean (µ) = 8 ∑X = 40

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Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population? %3D

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