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Name: We are running a hypothesis test to see if blood pressure of African z
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Description: We are running a hypothesis test to see if blood pressure of African zebras differs signific antly from Arabian horses. We assume blood pressure in both populations is normally distributed and both populations have the same population variance in bl

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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We are running a hypothesis test to see if blood pressure of African zebras differs signific antly from Arabian horses. We assume blood pressure in both populations is normally distributed and both populations have the same population variance in blood pressure which is unknown to us, so we use the sample variance to estimate the standard error for our calculations. We have a sample of size 5 for the African zebras and a sample of size 12 for the Arabian horses. How many degrees of freedome does our test statistic have?

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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