Question

Determine the upper-tail critical values of F in each of the following two-tail tests for a 95% confidence level:

a. α = 0.05, n1 = 21, n2 = 13
(A) 2.637
(B) 2.292
(C) 3.753
(D) 2.287

b. α = 0.01, n1 = 21, n2 = 13
(A) 4.623
(B) 2.945
(C) 3.747
(D) 4.532

c. α = 0.10, n1 = 8, n2 = 6
(A) 2.201
(B) 4.145
(C) 2.132
(D) 3.088

Answer 1

To find the upper-tail critical values of F in two-tail tests for a 95% confidence level, use an F-distribution table.

Step-by-step explanation:

To find the upper-tail critical values of F for a two-tail test with a 95% confidence level, we need to look up the values in an F-distribution table. Here are the correct values for each question:

a. α = 0.05, n1 = 21, n2 = 13: The correct answer is (C) 3.753.

b. α = 0.01, n1 = 21, n2 = 13: The correct answer is (A) 4.623.

c. α = 0.10, n1 = 8, n2 = 6: The correct answer is (A) 2.201.