Answered: Based on a random sample of 25 units of…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Based on a random sample of 25 units of product X, the average weight is 102 lbs., and
the sample standard deviation is 10 lbs. We would like to decide if there is enough evidence
to establish that the average weight for the population of product X is greater than 100 lbs.
Assume the population is normally distributed.
what is the critical value to test the claim at (alpha)= ,01?

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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