For a one-tailed hypothesis test in which the null hypothesis is $\pi$ 7and sample size is 150, which of the following statements is true?
A)Pooling sample standard deviations would be appropriate.
B)We could use the normal distribution to conduct the test.
C)The sample proportion can only be approximated.
D) $\pi$cannot be less than .7.

Question

For a one-tailed hypothesis test in which the null hypothesis is  $\pi$> 7and sample size is 150, which of the following statements is true?
A)Pooling sample standard deviations would be appropriate.
B)We could use the normal distribution to conduct the test.
C)The sample proportion can only be approximated.
D) $\pi$cannot be less than .7.

Quizplus · Accepted Answer

The central limit theorem allows us to use the normal distribution for hypothesis testing when the sample size is large (typically n ≥ 30), which is the case here with a sample size of 150.

For a One-Tailed Hypothesis Test in Which the Null Hypothesis π\piπ

For a One-Tailed Hypothesis Test in Which the Null Hypothesis $\pi$