Answered: A high school science teacher decided…

Name: A high school science teacher decided to give a series of lectures on
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Description: A high school science teacher decided to give a series of lectures on current events. To determine if the lectures had any effect on awareness of current events, an exam was given to the class before the lectures, and a similar exam was given after t

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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A high school science teacher decided to give a series of lectures on current events. To determine if the lectures had any effect on awareness of current events, an exam was given to the class before the lectures, and a similar exam was given after the lectures. The scores follow. Use a 0.05 level of significance to test the claim that the lectures made no difference against the claim that the lectures did make some difference (one way or the other).

Student	1	2	3	4	5	6	7	8	9
After Lectures	104	114	128	77	82	55	74	81	79
Before Lectures	118	116	96	76	87	57	76	79	86

Student	10	11	12	13	14	15	16	17	18
After Lectures	45	116	134	95	95	93	89	104	114
Before Lectures	45	114	108	111	95	92	71	103	106

(a) What is the level of significance?

(b) Compute the sample test statistic. (Use 2 decimal places.)

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