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

Algebra.Com
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)   (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








RELATED QUESTIONS

Find the critical value z a/2 that corresponds to the given confidence level. 80​% z... (answered by Theo)
Find the critical value zα/2 that corresponds to the given confidence level. 82% (answered by Theo)
Determine the critical value z>0 that corresponds to the 95% confidence level. Round to 3 (answered by ewatrrr)
Find the critical value Z a/2 that corresponds to the given confidence level. 99% (answered by ewatrrr)
Find the critical value Zơ/2 that corresponds to ơ=0.06 Zơ/2 = Round... (answered by Fombitz,kmarcus1)
Find the indicated critical z value. Find the critical value zα/2 that corresponds to (answered by math_tutor2020)
Find the critical value z Subscript alpha divided by za/2 that corresponds to the given... (answered by Boreal)
You intend to estimate a population mean with a confidence interval. You believe the... (answered by CPhill)
Find the critical value zc that corresponds to a 95% confidence... (answered by Fombitz)