Advanced Placement (AP), 23.04.2020 06:00 SebiZ3240

(I know the answer is 5.9 but I don’t understand how to show the work.) Use technology or a z-distribution table to find the indicated area.
Suppose ages of cars driven by company employees are normally distributed with a mean of 8 years and a standard deviation of 3.2 years. Approximately 75% of cars driven by company employees are older than what age?

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(I know the answer is 5.9 but I don’t understand how to show the work.) Use technology or a z-distri...