e Do Homework Pamela Baptiste Harris Internet Explorer http/ ron P http /Student

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e Do Homework Pamela Baptiste Harris Internet Explorer http/ ron P http /Student/PlayerH aspx?homeworkld-335675173&questionld; 3&flushed-false;&cld-3697895;&centerwin; yes Bing Pamela Baptiste Harris 4/15/16 4:54 Pr YAHOO Y Homework Module 8, Final Review Save RON C Score: 0 of 2 pts 3 of 29 (4 complete HW Score: 6.22%, 4.73 of 76 p 7.2.5 Question Help Le ca Find the critical value Z 2 that corresponds to the given confidence level. te 87% of dfi za12- Round to two decimal places as needed Se fir SO pr We an Enter your answer in the answer box and then click Check Answer. th fra All parts showing Clear All Check Answer HE Search the web and Windows in 4:54 PM A 4/15/2016

Explanation / Answer

An 87% CI has 13% / 2 = 0.065 area in each tail. Using a Standard Normal table, find the value of z*

P(Z < z*) = 0.065

z* = -1.514

But, there is also 0.065 area in the right tail, so z* = +1.514

z-critical = ± 1.514

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