A recent study of business travelers claims they spend an average of $41.00 per day on meals. As a test of this claim, a random sampling of 16 business travelers found they had spent an average of $45.00 per day with a standard deviation of $3.65. What are the critical values for a two-tailed t test of this claim with α = 0.05?
A) ± 2.120
B) ± 2.131
C) ± 1.753
D) ± 1.746

Question

Quizplus · Accepted Answer

Since it's a two-tailed t test and the level of significance is α = 0.05, we need to find the critical values of t for a sample size of 16 and degrees of freedom (df) of 15 (n-1). Using a t-table or calculator, the critical values are ±2.131. Therefore, B is the correct answer.

A Recent Study of Business Travelers Claims They Spend an Average