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school principal decided to change the teacher. The last test with the previous teacher, which was written by 18 people, showed an average of 58 with deviation of 12. A month later, a new teacher conducts a similar test that is written

school principal decided to change the teacher. The last test with the previous teacher, which was written by 18 people, showed an average of 58 with deviation of 12. A month later, a new teacher conducts a similar test that is written

MATLAB: An Introduction with Applications
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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Because of low results, the school principal decided to change the teacher. The last test with the previous teacher, which was written by 18 people, showed an average of 58 with deviation of 12. A month later, a new teacher conducts a similar test that is written by 19 people, with an average score of 60, and the deviation of 14. Calculate the t-test statistic. 

Select answer from the options below

 

 

A)The t-test statistic is -0.467 .

 

B)The t-test statistic is 0.828.

 

C)The t-test statistic is 0.467.

 

D)The t-test statistic is -1.688 .

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