The actual confidence level conf_level does not equal the theoretical confidence level 0.01 in Example 3.2. Explain why.

Data from Example 3.2

Data form Figure 3.3

Transcribed Image Text:

Example 3.2 (Confidence interval for wheat yield in Example 3.1). A 99% randomization confidence interval for the wheat data can be obtained by using randomization_ci(). The data for the two groups are defined by yA and yB, the confidence level is alpha, with M total experimental units and m experimental units in one of the groups. The sequence of values for A is found by trial and error, but it's important that the tails of the distribution of A are computed far enough so that we have values for the upper and lower a/2 percentiles. A plot of p(A) is shown in Figure 3.3. delta is selected so that pdelta is computed in tails of the distribution of T.