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?

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.

step-by-step explanation:

i am not sure sorry : c

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.