The average annual income of adult Americans is $56000 with a standard deviation of $4200. Assuming...

The average annual income of adult Americans is $56000 with a standard deviation of $4200. Assuming that the average annual income is normal, what is the probability that a single adult American earns more than $62000 annually. (include a normal curve with the appropriate parameters)

Solutions

Expert Solution

P[X>62000]

=P[Z>1.43]

=1-0.9236...............by using Z table.

=0.0764

orchestra answered 1 year ago

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