chapter 10 (hypothesis testing with means and proportions)

Question 1

z (critical)

Answer 1

z score that marks the beginning of the critical region on a z distribution.

Question 2

z (obtained)

Answer 2

test statistic computed in step 4/5. sample outcome expressed as a z score.

Question 3

two-tailed test

Answer 3

type of hypothesis test used when:
1. direction of the difference cannot be predicted.
2. concern focuses on outcomes in both tails of sampling distribution.

Question 4

one-tailed test

Answer 4

type of hypothesis test used when:
1. direction of the difference can be predicted.
2. concern focuses on outcomes in only one tail of the sampling distribution.

Question 5

t (critical)

Answer 5

t score that marks the beginning of the critical region of a t distribution.

Question 6

t (obtained)

Answer 6

test statistic computed in step 4/5. sample outcome expressed as a t score.