The pages per book in a library are normally distributed with a population standard deviation of 33 pages and an unknown population mean. A random sample of 16 books is taken and results in a sample mean of 334 pages.Identify the parameters needed to calculate a confidence interval at the 99% confidence level. Then find the confidence interval

The pages per book in a library are normally distributed with a population standard deviation of 33 pages and an unknown population mean. A random sample of 16 books is taken and results in a sample mean of 334 pages.Identify the parameters needed to calculate a confidence interval at the 99% confidence level. Then find the confidence interval

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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Question

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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