A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 207.1 cm and a standard deviation of 2.1 cm. For shipment, 18 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is less than 207.8 cm. P(M < 207.8 cm) =

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 207.1 cm and a standard deviation of 2.1 cm. For shipment, 18 steel rods are bundled together.

Find the probability that the average length of a randomly selected bundle of steel rods is less than 207.8 cm.
P(M < 207.8 cm) = 

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