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Name: A teacher performs a standardized test to evaluate how her students do
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Description: A teacher performs a standardized test to evaluate how her students do compared to students nationwide. Random sample of 200 from private school whose average acore is 72. Normally distributed with a meqn of 75 and standars deviation of 16. Do studen

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 teacher performs a standardized test to evaluate how her students do compared to students nationwide. Random sample of 200 from private school whose average acore is 72. Normally distributed with a meqn of 75 and standars deviation of 16. Do students at this small private school have different reading abilities compared to students nationwide? Set alpha=.05.

A. State the null abd the research hypothesis

B. Identify the critical values of z or t used to define the decision rule

C. Calculate the test statistic

D. Report the p-value

E. Report your findings

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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