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A tire manufacturer believes that the tread life of its snow tires can be described by a Normal model with a mean of 35,000 miles

A tire manufacturer believes that the tread life of its snow tires can be described by a Normal model with a mean of 35,000 miles and a standard deviation of 2700 miles. Complete parts a through e below.

c) Approximately what fraction of these tires can be expected to last between 31,000 and 37,000 miles?

About nothing % of these tires can be expected to last between 31.000 and 37000 miles

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