Forever Power Company analysts conducted tests on the life of its batteries and those of a competitor (Brand X). They found that their batteries had a mean life (in hours) of 26.6, with a standard deviation of 4.4. Their results for a sample of 10 Brand X batteries were as follows: 10, 17, 19, 22, 25, 25, 28, 30, 34, 36. O a. Find the mean and standard deviation for the sample of Brand X batteries. b. Which batteries have a more uniform life in hours? c. Which batteries have the highest average life in hours? a. What is the mean for the sample of brand X batteries? Ohr (Type an integer or a decimal.)

Forever Power Company analysts conducted tests on the life of its batteries and those of a competitor (Brand X). They found that their batteries had a mean life (in hours) of 26.6, with a standard deviation of 4.4. Their results for a sample of 10 Brand X batteries were as follows: 10, 17, 19, 22, 25, 25, 28, 30, 34, 36. O a. Find the mean and standard deviation for the sample of Brand X batteries. b. Which batteries have a more uniform life in hours? c. Which batteries have the highest average life in hours? a. What is the mean for the sample of brand X batteries? Ohr (Type an integer or a decimal.)

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Transcribed Image Text:Forever Power Company analysts conducted tests on the life of its batteries and those of a competitor (Brand X). They found that their batteries had a mean life (in hours) of 26.6, with a standard deviation of 4.4. Their results for a sample of 10 Brand X batteries were as follows: 10, 17, 19, 22, 25, 25, 28, 30, 34, 36. a. Find the mean and standard deviation for the sample of Brand X batteries. b. Which batteries have a more uniform life in hours? c. Which batteries have the highest average life in hours? a. What is the mean for the sample of brand X batteries? hr (Type an integer or a decimal.)

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