SOLUTION: Find the critical value zα/2 that corresponds to the confidence level 87​%. zα/2 = __ ​(Round to two decimal places as​ needed.)

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Question 1182737: Find the critical value zα/2 that corresponds to the confidence level 87​%.
zα/2 = __
​(Round to two decimal places as​ needed.)

Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
if the confidence level is 87%, that means the alpha = 1 minus .87 = .13.
alpha / 2 is therefore equal to .065.
the critical z-score will therefore be plus or minus 1.514101887.

this can be seen in the following displays using the z-score calculator that can be found at https://davidmlane.com/hyperstat/z_table.html