c) A manufacturer collected a sample of 500 light bulbs to conduct a study on the lifespan of that particular type of light bulb. The table summarizes the frequency distribution for the lifespan. 1 Lifetime of Bulbs (hours) 300-399 Number of Bulbs 4 400-499 28 500-599 97 600-699 242 700-799 96 800-899 27 900-999 Total 500 Required: i) By calculating the Mean, Median, Mode, Standard Deviation, the First Pearsonian Moment Coefficient of Skewness and the Second Pearsonian Moment Coefficient of Skewness comment on the Skewness of the distribution. ii) Assuming the distribution approximates a Normal Distribution what is the probability that a bulb selected at random would have a lifespan: 1. Between 500 and 750 hours. 2. Less than 450 hours. 3. Greater than 820 hours.
c) A manufacturer collected a sample of 500 light bulbs to conduct a study on the lifespan of that particular type of light bulb. The table summarizes the frequency distribution for the lifespan. 1 Lifetime of Bulbs (hours) 300-399 Number of Bulbs 4 400-499 28 500-599 97 600-699 242 700-799 96 800-899 27 900-999 Total 500 Required: i) By calculating the Mean, Median, Mode, Standard Deviation, the First Pearsonian Moment Coefficient of Skewness and the Second Pearsonian Moment Coefficient of Skewness comment on the Skewness of the distribution. ii) Assuming the distribution approximates a Normal Distribution what is the probability that a bulb selected at random would have a lifespan: 1. Between 500 and 750 hours. 2. Less than 450 hours. 3. Greater than 820 hours.
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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