For a sample size of 21 at 95% confidence, the chi-square values needed for interval estimation are
A) 9.591 and 34.170.
B) 2.700 and 19.023.
C) 8.260 and 37.566.
D) 10.283 and 35.479.

Question

Quizplus · Accepted Answer

For a sample size of 21, the degrees of freedom are 20. At 95% confidence, the chi-square critical values for 20 degrees of freedom are approximately 9.591 (lower) and 34.170 (upper).

For a Sample Size of 21 at 95% Confidence, the Chi-Square