Answered: Do a two-sample test for equality of…

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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Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel.

(a-1) Comparison of GPA for randomly chosen college juniors and seniors:

x⎯⎯1x¯1 = 4.5, s₁ = .20, n₁ = 15, x⎯⎯2x¯2 = 4.9, s₂ = .30, n₂ = 15, α = .025, left-tailed test.
(Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick" rules for degrees of freedom.)


d.f.	Not attempted
t-calculated	Not attempted
p-value	Not attempted
t-critical	Not attempted

(a-2) Based on the above data choose the correct decision.

Do not reject the null hypothesis
Reject the null hypothesis

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