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Mathematics, 14.12.2020 05:50 eburnhisel2023
Help The average life of an automobile tire of a certain manufacturer follows a Normal distribution, with a mean of 32,000 miles and a standard deviation of 1,250.
Which z-score separates the lower 70% from the upper 30% of the tires?
0.30
0.52
0.70
0.85
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