Suppose you are testing H0 27 versus Ha 27 and the Pvalu

Suppose you are testing H₀: ? = 27 versus H_a: ? > 27 and the P-value is 0.0218. What can you conclude at ? = 0.05?

Select one:

a. The mean is equal to 27.

b. The mean is significantly less than 27.

c. The mean is significantly greater than 27.

d. The mean differs significantly from 27.

e. We have insufficient evidence to conclude that the mean is less than 27.

Solution

Since the p-value is less than 0.05, we reject the null hypothesiss.

Answer: c. The mean is significantly greater than 27.