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.

Question

asked Jun 13, 2021 18.6k views

1 Answer

Sergey Makarov · Answer 1 · 2021-06-17T15:44:31+0000

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Answer:

The value is
$z = \pm 1.645$

Explanation:

From the question we are told that

The number of observation 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

$z = \pm 1.645$