A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.5 years. Assume the lifetime of a dishwasher is normally distributed. A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.5 years. Assumethe lifetime of a dishwasher is normally distributed.a) Identify the individual, variable, and type of variable in the context of this problem.The individual object is Select an answerThe variable information collected from each individual is Select an answerThis variable is a Select an answerb) What is the wording of the random variable X in the context of this problem?The random variable X = Select an answerc) Why can the Empirical Rule be used to approximate probabilities on this problem?Select an answer✓ variable.d) Use the Empirical Rule to approximate the percentage of dishwashers that last between 9 years and 15years.There is about% of dishwashers that last between 9 years and 15 years.e) If the warranty guarantees the dishwasher will last at least 9 years or your money back, what is theprobability that the company will have to refund money to a customer?% chance that the company will have to refund money to a customer.There is about

The question is about normal distribution Given :Population mean lifetime of a dishwasher ( ) = 12…

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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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A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.5 years. Assume the lifetime of a dishwasher is normally distributed.

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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