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. a=.09 for a right-tailed test

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Answer 1

Level of significance = = 0.09

The hypothesis is a right tail test.

We have to find a critical z value.

By using a z table we can find it easily.

1 - = 1 - 0.09 = 0.91

Search 0.91 or near value in the body of the z table.

In the body of the table, the value of 0.9099 is the nearest value then see the corresponding row and column.

We get the critical value 1.34.

So the critical z value = 1.34