Answered: Use a t-test to test the claim about…

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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Part 1

What are the null and alternative hypotheses? Choose the correct answer below.

H0:

μ=52,500

Ha:

μ≠52,500

H0:

μ≠52,500

Ha:

μ=52,500

H0:

μ≥52,500

Ha:

μ<52,500

H0:

μ≤52,500

Ha:

μ>

what is the standardized test statistic?

what are the critical values?

reject or fail to reject null hypothesis?

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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