Question

1 The statement of the alternative hypothesis - not the null hypothesis - always contains the equality. A) True B) False 2. An alternative hypothesis is a claim that holds if the null hypothesis is false. A) True B) False 3. The Hypothesis Test: HniH s 3 vs. Ha: > 3 represents a left-tailed test. A) True B) False 4. A professor refutes the claim that the average student spends three hours studying for the midterm exam. Which hypothesis is used to test the claim? A) HN: 47 3 vs. Ha:HI <3 B) HN: H3 vs. HA: > 3 C) Hn: u = 3 vs. Hau # 3 D) Hn:u3 vs. Ha: u = 3

Answer 1

1. False- Since the null hypothesis always contains the equality symbol not the alternative hypothesis.

2. True- Through the hypothesis test we only conclude whether to accept or reject the null hypothesis. So if we conclude that the null hypothesis is false that means we accept the claim that were testing in the alternative hypothesis.

3. False- This is a right tailed test as we can see the > symbol in the alternative hypothesis. (For left tailed the symbol in alternative hypothesis should be <)

4. The correct hypothesis here to refute that the average student studies for 3 hours for the exam would be:

Hn : u=3 vs Ha: u not equal 3

So option c is correct.