Answered: 2. A business francise for tv sets…

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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2. A business francise for tv sets claims that their product possesses an average defect-free life of 3 years or more. A sample of 5 households in a community that purchased the TV sets was taken (2.5,3,2.20,1.5,2.5). All five TV sets were observed to fail before 3 years. The 5 TV sets had a mean failure time of 2,4 years and a variance of 0.25 years. If it is assumed that the population of households that purchased the sets is normally distributed, is there sufficient evidence to contradict the manufacturer’s claim? Test at 5% level of significance. What is the hypothesis. Calculate the the Critical Value and Rejection Region Calculate the test statistic and state the conclusion

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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