The mean age of principals in a local school district is 56.7 years. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis? (Points : 5)

a. There is not sufficient evidence to support the claim mu is 56.7

b. There is sufficient evidence to support the claim mu is 56.7

c. There is not sufficient evidence to reject the claim mu is 56.7

d. There is sufficient evidence to reject the claim mu is 56.7