Answered: According to Ausgrid’s 2017-18 Local…

Name: According to Ausgrid’s 2017-18 Local Council Community Electricity Rep
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: According to Ausgrid’s 2017-18 Local Council Community Electricity Report, the daily usage per customer living in Burwood is normally distributed with a mean of 12.9 kWh and an unknown standard deviation. To test if the population of electricity usag

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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According to Ausgrid’s 2017-18 Local Council Community Electricity Report, the daily usage per customer living in Burwood is normally distributed with a mean of 12.9 kWh and an unknown standard deviation. To test if the population of electricity usage per customer living in Burwood per day equals 12.9 kWh, a random sample of the usage from 18 customers is collected and it shows a mean of 14.8 kWh and a standard deviation of 8.4 kWh. Conduct the test at the significance level α=0.05. (Show all steps)

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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