An instructor has two sections, A and B, in a particular subject. Section A has 18 students while section B has 25 students. On the same examination, although there was no significant difference in the mean grades, section A had a standard deviation, sA of 9 while section B had a standard deviation, sB of 12. Can we conclude at the 0.01 level of significance that the variability of section B is greater than that of A?

An instructor has two sections, A and B, in a particular subject. Section A has18students while section B has 25 students. On the same examination, although there was no significant difference in the mean grades, section A had a standard deviation, sA of 9 while section B had a standard deviation, sB of 12.

Step-by-step explanation:

where are the images of the functions i can only see the question you typed.

step-by-step explanation:

step-by-step explanation:

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