(d) Left tailed t test with = 0.05 and n = 40

(e)Right-tailed z test with = 0.015 and n = 240

(f) Two - tailed t test with = 0.01 and n = 81

Each of the following statements represents a claim. Determine the null hypothesis and the alternative hypothesis.

Then identify which hypothesis is the claim.

(a) The average salary of an adjunct professor is now more than $3,300 per course.

H0:

H1:

(b) Since joining the Cali Celtics, Isiah Thomas is an 87.6 % free-throwshooter.

H0:

H1:

(c) The average score on the math portion of the SAT is now less than 540

H0:

H1:

(d) The principal of North Quincy High School believes that the dropout rate for his school differs from the national rate of 14%.

H0:

H1:

(e) The average lifespan of a Cocker Spaniel now exceeds 13.5 years.

H0:

H1:

(f)

Because of new medical guidelines, the proportion of pregnancies thatend with a Cesarean section is now lowe r than the year 2000 value of 32%.

H0:

H1: