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Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a...

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Statistics

Does a statistics course improve a student's mathematicsskills,as measured by a national test? Suppose a random sample of13 students takes the same national mathematics exam prior toenrolling in a stats course and just after completing the course.At a 1% level of significance determine whether the scores afterthe stats course are significantly higher than the scores before.Take the differences = before - after.

Before    After
430        465
485        475
520        535
360        410
440        425
500        505
425        450
470        480
515        520
430        430
450        460
495        500
540        530

Locate student 9 in the dataset. What rank will be given to thisstudent? ________.


What is the value of the test statistic, T? Give answer to 1decimal place. ________.


What is the critical value for the study? (Hint: student 10 will bedropped from the analysis, since the scores are the same before andafter the stats class). ________.

Answer & Explanation Solved by verified expert
3.6 Ratings (526 Votes)
As we are given the data of before treatment and aftertreatment appropriate test will be paired t testTo test H0 treatment    See Answer
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