Question

Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Α = 0. 09 for a right-tailed test

Answer 1

From the z table the critical value corresponding to the level of significance level for a two-tailed test is z = 1.64.

How do form the hypotheses?

There are two hypotheses. First one is called null hypothesis and it is chosen such that it predicts nullity or no change in a thing. It is usually the hypothesis against which we do the test.

The hypothesis which we put against the null hypothesis is an alternate hypothesis.

The null hypothesis is the one that researchers try to disprove.

From the question, we are told that

The number of observations is greater than 50  i.e. n > 50

The  level of significance is  $\alpha = 0.1$

Generally given that n >  30  then we will make use of the z table

So From the z table the critical value corresponding to the level of significance level for a two-tailed test is z = 1.64.

Learn more about null and alternative hypotheses here:

brainly.com/question/18831983

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