Find the mean of battery lives __hrs B. Find the standard deviation of the battery lives

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are

Using the table I provided anwser the following questions

A. Find the mean of battery lives __hrs

B. Find the standard deviation of the battery lives

Interval
6.95-7.45
7.45-7.95
7.95-8.45
8.45-8.95
8.95-9.45
9.45-9.95
9.95-10.45
Frequency
2
8
19
41
18
10
2
Transcribed Image Text:Interval 6.95-7.45 7.45-7.95 7.95-8.45 8.45-8.95 8.95-9.45 9.45-9.95 9.95-10.45 Frequency 2 8 19 41 18 10 2
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