7. A power supply company states that it has a target power supply of 119 volts. A researcher wants to test the company's claim so she collected data from 30 random family homes and calculated the following sample statistics: i = 118.89 volts, s = 0.35 volts. Use a 0.01 significance level to test the claim that the mean power supply is 119 volts. Show all of your work. a) Identify the null and alterative hypotheses, test statistic, and P-value. Round to three decimal places. b) State the final conclusion that addresses the original claim.

7. A power supply company states that it has a target power supply of 119 volts. A researcher wants to test the company's claim so she collected data from 30 random family homes and calculated the following sample statistics: i = 118.89 volts, s = 0.35 volts. Use a 0.01 significance level to test the claim that the mean power supply is 119 volts. Show all of your work. a) Identify the null and alterative hypotheses, test statistic, and P-value. Round to three decimal places. b) State the final conclusion that addresses the original claim.

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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