SOLUTION: In a random selection of 64 of the 2400 intersections in a small city, the mean number of scooter accidents per year was 3.2 and the sample standard deviation was 0.8. what wil

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Question 1197818: In a random selection of 64 of the 2400 intersections in a small city, the mean
number of scooter accidents per year was 3.2 and the sample standard
deviation was 0.8. what will be the upper and lower limits of the confidence
interval for the mean number of accidents per intersection per year?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Using a 95% confidence interval: z = 1.96
n = 64 , x-bar = 3.2
ME = z%2Asigma%2Fsqrt%28n%29
3.2 ± 1.96%2A.8%2F8
3.2 ± .2
CI(3, 3.4)
what will be the upper and lower limits of the confidence
interval "for the mean number of accidents per intersection per year"?
CI states that there will be from 3 to 3.4 accidents per intersection per year.