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Find the? z-score that corresponds to each life span

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Reference no: EM132432495

Problem: A certain brand of automobile tire has a mean life span of 32,000 miles and a standard deviation of 2,300 miles.(Assume the life spans of the tires have a? bell-shaped distribution.)

?(a) The life spans of three randomly selected tires are 35,000 ?miles, 36,000 ?miles, 31,000 miles. Find the? z-score that corresponds to each life span.

For the life span of 35 comma 35,000 ?miles, z-score is ___.

Reference no: EM132432495

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