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To test if students, on average, exercise more than 2 hr/week, a random sample of exercise...

To test if students, on average, exercise more than 2 hr/week, a random sample of exercise times of 25 students was collected with an average of 2.5 hours with a standard deviation of 0.5 hours. Choose an appropriate test statistic.

Z=(2.5-2) / (0.5/5)

Z=(2-2.5) / 0.5

t=(2.5-2) / (0.5/5)

t=(2-2.5) / (0.5/25)

To test if students, on average, exercise more than 2 hr/week, a random sample of exercise times of 25 students was collected and an average of 2.5 hours and a standard deviation of 0.5 hours were estimated.

List ALL data conditions and assumptions required for hypothesis testing.

Population SD is unknown

Sample Size is large

Population SD is known

Number of hours of exercise is Normally distributed

To test if students, on average, exercise more than 2 hr/week, a random sample of exercise times of 25 students was collected with an average of 2.5 hours with a standard deviation of 0.5 hours. Choose an appropriate set of hypotheses.

H0: mu = 2.5 Ha: mu > 2.5

H0: X_bar = 2 Ha: X_bar > 2

H0: mu = 2 Ha: mu > 2

H0: X_bar = 2.5 Ha: X_bar > 2.5
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