1. We would like to establish the 95% confidence interval for the proportion of left-handed baseball players. We drew a sample of 59 baseball players and found that 15 are left-handed. Using this estimate, find the 95% confidence interval for true proportion of left-handed players in baseball.
a). Compute the estimate
b). Compute the standard error
c). Compute the margin of error
d). Calculate the confidence interval
2. Ask yourself, "during the school year, how many hours do I spend, on average on school related work per week - for example, reading books, attending class, doing homework, and writing papers. Record your value of estimated hours spent per week. Then ask a random sample of at least 10 students the same question. Test the hypothesis using a = .05 that the average of all the students is the same as yours.
Students Hours Weekly
1 15
2 4
3 7
4 12
5 18
6 25
7 6
8 10
9 5
10 8