You are performing a left-tailed test. If α=.10, find the critical value, to three decimal places....

You are performing a left-tailed test.

If α=.10, find the critical value, to three decimal places.

zα=

how do i put this into a calculator?

Expert Solution

Given that, you are performing a left-tailed test.

Significance level (α) = 0.10

Using TI-83 plus calculator we want to find, the z-score such that, P(Z < z) = 0.10

Step 1) Press "2nd" button then press "VARS"

Step 2) Select option "3 : invNorm" and enter values as follows :

Step 3) invNorm(0.10) and press ENTER and you will get required z-score or critical value for left-tailed test.

=> Critical value = -1.282 (rounded to three decimal places)

=> Zα = -1.282

orchestra answered 2 years ago

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