For a one-tailed test (lower tail), a sample size of 10 at 90% confidence, t =
A)1.383
B)2.821
C)-1.383
D)-2.821

Question

Quizplus · Accepted Answer

For a lower tail one-tailed test with a sample size of 10 and 90% confidence level, we need to find the critical value of t. Using a t-table with 9 degrees of freedom (n-1), we find the critical value to be -1.383. Since we are looking for a lower tail, the negative value is our critical value. Therefore, the answer is C.

For a One-Tailed Test (Lower Tail), a Sample Size of 10