The middle 0.95 portion of the chi-square distribution with 10 degrees of freedom has table values of:
A) 2.558,3.247,respectively.
B) 3.247,18.307,respectively.
C) 3.247,20.483,respectively.
D) 3.940,20.483,respectively.
E) 4.366,23.843,respectively.

Question

Quizplus · Accepted Answer

The middle 0.95 portion of any distribution covers 95% of the total area under the curve. When we look at the table of the chi-square distribution with 10 degrees of freedom, we can find the values that correspond to the area of 0.025 and 0.975 (which add up to 0.95). These values are 3.247 and 20.483, respectively, so the correct choice is C.

The Middle 0