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Estimate the population average difference

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Reference no: EM13247626

Question

A study is conducted to estimate the average difference in bus use in a large city between the morning and afternoon rush hours. The transit authority's researcher randomly selects nine buses because of the variety of routes they represent. On a given day, the number of passengers on each bus is counted at 7.45 am and at 4.45 pm, with the following results:

Bus Morning Afternoon
1 43 41
2 51 49
3 37 44
4 24 32
5 47 46
6 44 42
7 50 47
8 55 51
9 46 49






Sample size 9
Confidence interval 90%

a) Use the data to compute a 90% confidence interval to estimate the population average difference. Assume that the number of passengers is normally distributed.

Reference no: EM13247626

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