A researcher wanted to know if high school juniors worked more hours per week than high...

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A researcher wanted to know if high school juniors worked more hours per week than high school seniors. His findings are in t

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Answer 1

Answer #1

The statistical software output for this problem is:

Two sample Z summary bypothesis test: H: Mean of population 1 (Std. dev = 7.1) H: Mean of population 2 (Std dev. = 8.4) H-2:

From above output:

Z = -0.3354, P = 0.3686

Option A is correct.

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Answer 2

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