Below is a hypothesis test set up by a student who recently took introductory statistics:
$ H_{0}: \bar{x}=5 $
$ H_{A}: \bar{x} \neq 5 $
The sample mean of 100 cases used to implement the hypothesis test is $ \bar{x}=4.2 $. Which of the following statements are accurate?
i. This is a one-sided hypothesis test.
ii. There is an error in how these hypotheses were constructed.
iii. It would be reasonable to swap "

Question

Below is a hypothesis test set up by a student who recently took introductory statistics:
$ H_{0}: \bar{x}=5 $
$ H_{A}: \bar{x} \neq 5 $
The sample mean of 100 cases used to implement the hypothesis test is $ \bar{x}=4.2 $. Which of the following statements are accurate?
i. This is a one-sided hypothesis test.
ii. There is an error in how these hypotheses were constructed.
iii. It would be reasonable to swap "<" for " $ z " $ in the alternative hypothesis.
Oi only
ii only
iii only
i and ii
i and iii
ii and iii

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absolutely FOR FREE!