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Name: A cable brand claims to have a breaking strength of at least 900 pound
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A cable brand claims to have a breaking strength of at least 900 pounds with a standard deviation of 13 pounds. A company researcher selects a sample of 29 cables and find out that the average breaking strength is 825.3 pounds. Assume that the breaki

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 22SGR

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A cable brand claims to have a breaking strength of at least 900 pounds with a standard deviation of 13 pounds. A company researcher selects a sample of 29 cables and find out that the average breaking strength is 825.3 pounds. Assume that the breaking strength of the cables is normally distributed. If the level of significance is set to a= 0.05, what is the area of the rejection region and where is it located?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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