Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the
same 10 exams, with the following results:
Mean Grade Standard Deviation
Professor 1 79.3 22.4
Professor 2 82.1 12.0
What is the alternate hypothesis?
1 answer:
Answer:
Alternative hypothesis:
Step-by-step explanation:
Given that:
Sample 1:
Sample size = 10
Sample mean = 79.3
Standard deviation = 22.4
Sample 2:
Sample size = 10
Sample mean = 82.1
Standard deviation = 12.0
To find the alternative hypothesis.
The null and alternative hypothesis can be computed as follows:
Null hypothesis:
Alternative hypothesis:
Since, alternative hypothesis is ≠, it shows that it is a two tailed test.
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