Question: Refer to Exercise 5.45. a. Calculate the mean and standard deviation for x, the number of injuries per year sustained by a school-age child. b.

Refer to Exercise 5.45.
a. Calculate the mean and standard deviation for x, the number of injuries per year sustained by a school-age child.
b. Within what limits would you expect the number of injuries per year to fall?
Exercise 5.45
According to a study conducted by the Department of Pediatrics at the University of California, San Francisco, children who are injured two or more times tend to sustain these injuries during a relatively limited time, usually 1 year or less. If the average number of injuries per year for school-age children is two, what are the probabilities of these events?

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