The body weight of a healthy 3-month-old colt should be about ? = 76 kg.
(a) If you want to set up a statistical test to challenge the claim that ? = 76 kg, what would you use for the null hypothesis
H0?
? > 76 kg
? < 76 kg
? = 76 kg
? ≠ 76 kg
(b) In Nevada, there are many herds of wild horses. Suppose you want to test the claim that the average weight of a wild Nevada colt (3 months old) is less than 76 kg. What would you use for the alternate hypothesis
H1?
? > 76 kg
? < 76 kg
? = 76 kg
? ≠ 76 kg
(c) Suppose you want to test the claim that the average weight of such a wild colt is greater than 76 kg. What would you use for the alternate hypothesis?
? > 76 kg
? < 76 kg
? = 76 kg
? ≠ 76 kg
(d) Suppose you want to test the claim that the average weight of such a wild colt is different from 76 kg. What would you use for the alternate hypothesis?
? > 76 kg
? < 76 kg
? = 76 kg
? ≠ 76 kg
(e) For each of the tests in parts (b), (c), and (d), respectively, would the area corresponding to the P-value be on the left, on the right, or on both sides of the mean?
left; both; right
both; left; right
right; left; both
left; right; both