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A company produces steel rods. The lengths of the steel rods are normally distributed with a...

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 215.6-cm and a standard deviation of 2.4-cm. For shipment, 15 steel rods are bundled together.

Find the probability that the average length of a randomly selected bundle of steel rods is between 215-cm and 216.5-cm.
P(215-cm < M < 216.5-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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Answer #1

Given

mean

Standard deviation

Sample size

Note By using Calculator (or) Excel formula to find the probability

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