Answered: uppose the exam for this unit was…

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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Question

Suppose the exam for this unit was written with the assumption that the average should have
been a 77. Using a hypothesis test, the following 8 randomly selected scores, and a level of
significance 0.05, test my claim that the average score is a 77. Assume the scores are normally
distributed.( show work)
87 55 72 52
85 106 61 77

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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