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*3-7. The following table shows the distribution of the life time of 350 radio tubes. Lifetime (in hours) : 300-400 400-500 500-600 600-700 700-800 800-900 900-1000 Number of tubes 6. 18 73 165 62 22 4. Stating clearly the assumptions involved, obtain the percentage of tubes that have life time: (a) Greater than 760 hours; (b) Between 650 and 850 hours; and (c) Less than 530 hours.

*3-7. The following table shows the distribution of the life time of 350 radio tubes. Lifetime (in hours) : 300-400 400-500 500-600 600-700 700-800 800-900 900-1000 Number of tubes 6. 18 73 165 62 22 4. Stating clearly the assumptions involved, obtain the percentage of tubes that have life time: (a) Greater than 760 hours; (b) Between 650 and 850 hours; and (c) Less than 530 hours.

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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3-7. The following table shows the distribution of the life time of 350 radio tubes. Lifetime (in hours) : Number of tubes 300-400 400-500 500-600 600-700 700-800 800-900 900-1000 18 73 165 62 22 4. Stating clearly the assumptions involved, obtain the percentage of tubes that have life time: (a) Greater than 760 hours; (b) Between 650 and 850 hours; and (c) Less than 530 hours.
Transcribed Image Text:3-7. The following table shows the distribution of the life time of 350 radio tubes. Lifetime (in hours) : Number of tubes 300-400 400-500 500-600 600-700 700-800 800-900 900-1000 18 73 165 62 22 4. Stating clearly the assumptions involved, obtain the percentage of tubes that have life time: (a) Greater than 760 hours; (b) Between 650 and 850 hours; and (c) Less than 530 hours.
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