You want to know whether employees in a company consider the ideal average working hours to be 10, or higher or lower than that.

(a) Define notation and state the null and alternative hypotheses for studying this.

(b) For responses in a recent survey to the question“What do you think are the ideal average working hours?” software shows results:

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Test of mu = 10 vs mu not = 10 Variable n Mean StDev SE Mean T P-value Hours 1500 10.5 0.750 0.036 25.82 0.0000

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Report the test statistic value, and show how it was obtained from other values reported in the table.

(c) Explain what the P-value represents, and interpret its value.