Comparing Two Proportions

2 Questions


Hi Prof i was wondering if you could help me with number 38 from chapter nine in the homework.

I keep trying and trying and i keep getting the wrong answer and i don't know what I'm doing.
I have

N: 60
p hat: i divided 52/60: .8667
and q hat is 1-.8667 and i got .133

N: 58
p hat: 56/58 and got .9655
q hat: 1-.9655

i don't know if thats the right data but i keep getting the wrong answer

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Professor, I really don't understand this problem. Can you please help? I feel like not enough information is given.
The Journal of Sport Behavior studied a variety of exercise workouts. One group of 38 people varied their exercise routine in workouts while a second group of 38 had no set schedule or regulations for their workouts. By the end of the study 14 people dropped out of the first exercise group and 23 had dropped out of the second group.
a. Find a 90 confidence interval for the difference between the dropout rates of the two groups of exercisers.
b. Conduct an appropriate test of hypothesis for the difference between the two groups, using the p-value, at α = .10

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