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Interval Frequency The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: 6.95 - 7.45 7.45- 7.95 7.95-8.45 8.45-8.95 19 37 8.95-9.45 18 13 9.45-9.95 9.95 - 10.45 ... a. Find the mean of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.)

Interval Frequency The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: 6.95 - 7.45 7.45- 7.95 7.95-8.45 8.45-8.95 19 37 8.95-9.45 18 13 9.45-9.95 9.95 - 10.45 ... a. Find the mean of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Interval Frequency 6.95 - 7.45 The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: 8. 7.45- 7.95 19 7.95 -8.45 8.45 -8.95 37 18 8.95 -9.45 13 9.45 -9.95 3 9.95 - 10.45 a. Find the mean of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) tv N MacBook Air 80 F3 F2 F4 F5 F6 F7 F8 # $ & * 3 4 7 8 9 W
Transcribed Image Text:Interval Frequency 6.95 - 7.45 The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: 8. 7.45- 7.95 19 7.95 -8.45 8.45 -8.95 37 18 8.95 -9.45 13 9.45 -9.95 3 9.95 - 10.45 a. Find the mean of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the battery lives. hrs (Type an integer or a decimal. Round to two decimal places.) tv N MacBook Air 80 F3 F2 F4 F5 F6 F7 F8 # $ & * 3 4 7 8 9 W
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We know that data.

Mean = sum of all observations/total number of observations 

 

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