SOLUTION: A university claim that 60% of its entering freshman graduate within five years. A freshman class of 1100 is monitored for five years. At the end of that period, it is found thiat

Question 1126945: A university claim that 60% of its entering freshman graduate within five years. A freshman class of 1100 is monitored for five years. At the end of that period, it is found thiat 650 of these freshmen had graduated. What is the probability that we would have found that 650 or less of these freshmen have a graduated by that time if in fact the claim of 60% was correct ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
650/1100 is 0.591
do one sample proportion test
z=(0.591-0.600)/sqrt(.6*.4/1100); sqrt term is 0.01477
z=-0.009/0.01477=-0.61
probability z <-0.61 is 0.2709

RELATED QUESTIONS
a university claims that 60% of its entering freshmen graduate within 5 years. a freshman (answered by Boreal)

There are 200 girls in a freshman class. This is 40% of the freshman class. How many... (answered by stanbon)

A researcher polled 230 freshman at a university and found that 110 of them were enrolled (answered by tommyt3rd)

At Newfield HS, the sophomore class has 60 more students that the freshman class. The... (answered by College Student)

In the Big Ten (NCAA sports league) a sample showed that only 267 out of 584 freshman... (answered by stanbon)

75% of freshman entering public school graduate with their class. A random sample of 135 (answered by stanbon)

The freshman class at a major university contains 12150 12150 students. This was a 35% (answered by josgarithmetic)

Hi..I try to solve this..but I got lost At Fictional University of Technology, 65% of (answered by stanbon)

If the probability that the average freshman will complete four years of college is 2/3,... (answered by stanbon)