andrewn1972 andrewn1972

24-05-2024
Mathematics

contestada

Furnace repair bills are normally distributed with a mean of 266 dollars and a standard deviation of 20 dollars. If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 266 dollars and 268 dollars.

A. 0.7881
B. 0.2881
C. 0.2119
D. 0.5517

Respuesta :

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