Two groups of students are tested after two types of instruction. Student Group 1 receives traditional instruction and Student Group 2 receives modified instruction. Below are the t-test results:t-Test: Two-Sample Assuming Equal Variances Students 1Students 2Mean15.316.9Variance4.92.766666667Observations1010Pooled Variance3.833333333 Hypothesized Mean Difference0 df18 t Stat-2.82732877 P(T<=t) one-tail0.042139087 t Critical one-tail1.734063607 P(T<=t) two-tail0.034278174 t Critical two-tail2.10092204 What is the null hypothesis?Use the two-tail probability. Is there a difference between the group of students in group 1 and students in group 2?In a sentence or two, describe the results in terms of the statistics as you would for an academic article.

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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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Two groups of students are tested after two types of instruction. Student Group 1 receives traditional instruction and Student Group 2 receives modified instruction. Below are the t-test results:

t-Test: Two-Sample Assuming Equal Variances

	Students 1	Students 2
Mean	15.3	16.9
Variance	4.9	2.766666667
Observations	10	10
Pooled Variance	3.833333333
Hypothesized Mean Difference	0
df	18
t Stat	-2.82732877
P(T<=t) one-tail	0.042139087
t Critical one-tail	1.734063607
P(T<=t) two-tail	0.034278174
t Critical two-tail	2.10092204

What is the null hypothesis?
Use the two-tail probability. Is there a difference between the group of students in group 1 and students in group 2?
In a sentence or two, describe the results in terms of the statistics as you would for an academic article.

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