SOLUTION: A college has 500 students. A survey was carried out on 22 students chosen at random to find out the average number of siblings. The following data is obtained: 2, 1, 3, 2, 0, 1,

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Question 1181117: A college has 500 students. A survey was carried out on 22 students chosen at random to find out the
average number of siblings. The following data is obtained: 2, 1, 3, 2, 0, 1, 2, 4, 0, 1, 1, 0, 1, 3, 2, 0, 1,
2, 2, 1, 0, 1 ; Find the 90% confidence interval for the mean number of sibling of the college students.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The mean is 1.36 and s=1.09
90% half-interval is t(0.95, df=21)*s/sqrt(n)=1.717*1.09/sqrt(22)=0.399
the 90% CI for the mean is (0.96, 1.76)