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 3GP
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![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.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe596597a-c7d6-4d70-9076-bfa8a12feb26%2Ffc2e67cf-1b1f-4747-b31e-2fbec73bf8ca%2Fw07y08_processed.jpeg&w=3840&q=75)
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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