Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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[Statistics] How do you solve this? Thank you

In studying basal areas of similar trees for many years, a scientist has discovered that these measurements (in square inches) are normally distributed with standard deviation approximately 4 square inches. If the forester samples n = 9 trees, find the probability that the sample mean will be within 2 square inches of the population mean. Note: Please round your answer to 4 decimal places.
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Transcribed Image Text:In studying basal areas of similar trees for many years, a scientist has discovered that these measurements (in square inches) are normally distributed with standard deviation approximately 4 square inches. If the forester samples n = 9 trees, find the probability that the sample mean will be within 2 square inches of the population mean. Note: Please round your answer to 4 decimal places.
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