Answered: Whichof the following is NOT an…

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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Which
of the following is NOT an assumption of the t-test?
a.
Each sample is drawn from a population with a normal distribution.
b. The
two populations being compared have equal variances.
c. The
two populations being compared have equal means.
d. All
of each sample is drawn from a population with a normal distribution, the two
populations being compared have equal variances, and the two populations being
compared have equal means are assumptions.
e.
None of each sample is drawn from a population with a normal
distribution, the two populations being compared have equal variances, and the
two populations being compared have equal means are assumptions

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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