teger so it is certainly not normal. a. Let X be the mean number of accidents per week at the intersection during a year (52 weeks). What is the approximate distribution of X? b. What is the approximate probability that X is less than 2? c. What is the approximate probability that there are fewer than 100 accidents at the intersection in a year?

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
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1. The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard
deviation 1.4. The distribution takes only integer values (so it is discrete) and is skewed to the right,
so it is certainly not normal.
a. Let X be the mean number of accidents per week at the intersection during a year (52 weeks).
What is the approximate distribution of X?
b. What is the approximate probability that X is less than 2?
c. What is the approximate probability that there are fewer than 100 accidents at the intersection in a
year?
Transcribed Image Text:1. The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4. The distribution takes only integer values (so it is discrete) and is skewed to the right, so it is certainly not normal. a. Let X be the mean number of accidents per week at the intersection during a year (52 weeks). What is the approximate distribution of X? b. What is the approximate probability that X is less than 2? c. What is the approximate probability that there are fewer than 100 accidents at the intersection in a year?
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