Data Set 8-1: A sample with scores: 1, 2, 3
-Refer only to Data Set 8-1. The 99 percent confidence interval about this sample mean is
A) -7.93 to 11.93
B) -5.31 to 5.31
C) -3.73 to 7.73
D) -1.31 to 5.31
E) -1.37 to 5.37

Question

Quizplus · Accepted Answer

The sample mean is 2, and the standard deviation is approximately 1. The 99% confidence interval is calculated using the t-distribution due to the small sample size (n=3). The interval is approximately 2 ± 5.73, resulting in -3.73 to 7.73.

Data Set 8-1: a Sample with Scores: 1, 2, 3