1. (a) ( 10 pts) In ABC City, the length X of residence of a family...

1. (a) ( 10 pts) In ABC City, the length X of residence of a family in a home is normal with mean 80 months and variance 900. Using the table, find the probability that a family selected at random will have lived in ABC City at least eight years.
(b) (5 pts) Using part (a) find the probability that of twelve independent families living in ABC City exactly three will have lived there at least eight years.

Expert Solution

thank you.

orchestra answered 1 year ago

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