The manufacturer of LED lights would like to include as part of their advertising the number of hours an LED is expected to work. A sample of 20 lights revealed the following number of hours worked. 2898 2828 2674 2795 2672 2675 2486 2852 2733 2655 2775 2894 2486 2627 2624 2785 2692 2654 2518 2650 d. Draw nomal probability plot for the above data and make comment. e. Assuming given data to be approximately nomally distributed, Construct 90%, 95% and 99% confidence intervals for the mean number ofhours that the LED lights of this brand has worked. f. Construct 90%, 95% and 99% confidence intervals for the standard deviation of the number of hours that the LED lights of this brand worked.
The manufacturer of LED lights would like to include as part of their advertising the number of hours an LED is expected to work. A sample of 20 lights revealed the following number of hours worked. 2898 2828 2674 2795 2672 2675 2486 2852 2733 2655 2775 2894 2486 2627 2624 2785 2692 2654 2518 2650 d. Draw nomal probability plot for the above data and make comment. e. Assuming given data to be approximately nomally distributed, Construct 90%, 95% and 99% confidence intervals for the mean number ofhours that the LED lights of this brand has worked. f. Construct 90%, 95% and 99% confidence intervals for the standard deviation of the number of hours that the LED lights of this brand worked.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:The manufacturer of LED lights would like to include as part of their advertising the
number of hours an LED is expected to work. A sample of 20 lights revealed the
following number of hours worked.
2898 2828 2674 2795 2672 2675 2486 2852 2733 2655
2775 2894 2486 2627 2624 2785 2692 2654 2518 2650
d. Draw normal probability plot for the above data and make comment.
e. Assuming given data to be approximately nomally distributed, Construct 90%,
95% and 99% confidence intervals for the mean number of hours that the LED
lights of this brand has worked.
f. Construct 90%, 95% and 99% confidence intervals for the standard deviation of
the number of hours that the LED lights of this brand worked.
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