Re: GIPE Sample Paper

Posted by Falcon X on Jun 08, 2016; 3:52pm
URL: http://discussion-forum.276.s1.nabble.com/GIPE-Sample-Paper-tp7601338p7601343.html

75.8% "exceed" is the same as 100% - 75.8% = 24.2% do not exceed

P(Z < z*) = 0.242 has a z* = -0.70 from Standard Normal table.

Hence the ans is 5.5 + (-0.70)(1) = 4.8 minutes.

So, 75.8% of students exceed 4.8 minutes.