company produces steel rods. The lengths of the steel rods are normaly n and a standard deviation of 0.9-cm. For shipment, 28 steel rods are b

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 238.5-
cm and a standard deviation of 0.9-cm. For shipment, 28 steel rods are bundled together.
Find the probability that the average length of a randomly selected bundle of steel rods is between 238.4-cm
and 238.5-cm.
P(238.4-cm < M < 238.5-cm) =
Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-
scores rounded to 3 decimal places are accepted.
Transcribed Image Text:A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 238.5- cm and a standard deviation of 0.9-cm. For shipment, 28 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is between 238.4-cm and 238.5-cm. P(238.4-cm < M < 238.5-cm) = Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z- scores rounded to 3 decimal places are accepted.
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