The chi-square value for a one-tailed (lower tail) test when the level of significance is .1 and the sample size is 15 is
A) 21.064.
B) 23.685.
C) 7.790.
D) 6.571.

Question

Quizplus · Accepted Answer

To find the chi-square value for a one-tailed (lower tail) test, we need to use a chi-square distribution table. With a level of significance of .1 and 15 degrees of freedom, the chi-square value is 7.790. This is because the one-tailed test is only looking at one end of the distribution, which reduces the area under the curve and decreases the critical value.

The Chi-Square Value for a One-Tailed (Lower Tail) Test When