Question

Find the critical value tα/2 needed to construct a confidence

interval of the given level with the given sample size: Level 99.9,
sample size 16

Answer 1

To find the critical value tα/2 needed for a confidence interval of level 99.9% and sample size 16, consult the t-table or use the calculator function invT(0.0005, 15), which gives a value of approximately 3.901.

Step-by-step explanation:

To find the critical value tα/2 needed to construct a confidenceinterval of the given level, we need to use the t-table or a calculator.

For a level of 99.9% and a sample size of 16, we need to find the critical value corresponding to the area in the tails of the t-distribution.

In this case, we can consult the t-table or use the calculator function invT(0.0005, 15), which gives us a value of approximately 3.901 as the critical value tα/2.