Question

Tyesha found that the z-statistic was 2.1 and that the critical z-values were -1.96 and 1.96. Which of the following is a valid conclusion based on these results?

Answer 1

`z=2.1` falls outside the region
`|z|<1.96`, which suggests that
`|z|>1.96` is the rejection region for a hypothesis at a 5% significance level. (We know this because
`\mathbb P(|Z|<1.96)\approx0.95`.) Because
`z` falls in the rejection region, presumably this means you are rejecting some null hypothesis. But it's difficult to say for certain without any more information.

Answer 2

One can reject the null hypothesis.

Explanation:

got it right on edge2020