A Professor Would Like to Test the Hypothesis That the Average

question 28

Multiple Choice

A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam has a standard deviation that is less than 5.0 minutes. The correct hypothesis statement would be _.

• A)H₀: a2 c 25; H₁: a2 < 25
• B)H₀: a = 5; H₁: a × 5
• C)H₀: a² = 5; H₁: a² × 5
• D)H₀: µ c 5; H₁: µ < 5

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