The average life of an electric rice cooker is 5 years, with a standard deviation of 1 year. Assume the lives of these cookers follow a normal distribution. Find a. The probability that the mean life of a random sample of 9 machines falls between 5.7 and 8.1 years. (Answer in percent with 2 decimal places. No need to include the percent symbol)Answer: Blank 1% b. The value of to the left of which 85% of the means computed from random samples of size 9 would fall.(Answer in percent with 2 decimal places. No need to include the percent symbol)Answer: Blank 2% The average life of an electric rice cooker is 5 years, with a standard deviation of 1 year. Assume the lives of these cookers follow anormal distribution. Finda. The probability that the mean life of a random sample of 9 machines falls between 5.7 and 8.1 years. (Answer in percent with 2decimal places. No need to include the percent symbol)Answer: Blank 1%b. The value of to the left of which 85% of the means computed from random samples of size 9 would fall.(Answer in percent with 2decimal places. No need to include the percent symbol)Answer: Blank 2%Blank 1 Add your answerBlank 2 Add your answer

Given that. X~N( μ , ?^2 ) μ=5 , ?=1 , n=9 Z-score =( x - μ )/?

Answered: The average life of an electric rice…

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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The average life of an electric rice cooker is 5 years, with a standard deviation of 1 year. Assume the lives of these cookers follow a normal distribution. Find

a. The probability that the mean life of a random sample of 9 machines falls between 5.7 and 8.1 years. (Answer in percent with 2 decimal places. No need to include the percent symbol)

Answer: Blank 1%

b. The value of to the left of which 85% of the means computed from random samples of size 9 would fall.(Answer in percent with 2 decimal places. No need to include the percent symbol)

Answer: Blank 2%

The average life of an electric rice cooker is 5 years, with a standard deviation of 1 year. Assume the lives of these cookers follow a
normal distribution. Find
a. The probability that the mean life of a random sample of 9 machines falls between 5.7 and 8.1 years. (Answer in percent with 2
decimal places. No need to include the percent symbol)
Answer: Blank 1%
b. The value of to the left of which 85% of the means computed from random samples of size 9 would fall.(Answer in percent with 2
decimal places. No need to include the percent symbol)
Answer: Blank 2%
Blank 1 Add your answer
Blank 2 Add your answer

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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