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Mathematics 14 Online
OpenStudy (anonymous):

A certain brand of automobile tire has a mean life span of 39,000 miles and a standard deviation of 2450 miles (Assume the life spans have a bell shaped distribution) The life spans of three randomly selected tires are 35,000miles-37,000 miles- and 31,000 miles. What are their individual z scores?

OpenStudy (anonymous):

most probability textbooks have a zscore table in the appendix.

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