A Professor Would Like to Test the Hypothesis That the Average

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