The population in this project has a standard deviation that is unknown to us in principle, so the t-interval method that uses the sample standard deviation, s, and t-values. Construct a confidence interval for the unknown population mean using the sample statistics. Sample mean: x=23.3 Sample size: n=30 Sample standard deviation: s=19.86 confidence level: 95%

The population in this project has a standard deviation that is unknown to us in principle, so the t-interval method that uses the sample standard deviation, s, and t-values. Construct a confidence interval for the unknown population mean using the sample statistics. Sample mean: x=23.3 Sample size: n=30 Sample standard deviation: s=19.86 confidence level: 95%

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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Question

The population in this project has
a standard deviation that is unknown to us in principle, so the t-interval method that uses
the sample standard deviation, s, and t-values. Construct a confidence interval for the
unknown population mean using the sample statistics.

Sample mean: x=23.3

Sample size: n=30

Sample standard deviation: s=19.86

confidence level: 95%

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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