Ask a New Question
Search
Questions and answers by
Kimberly Rubino
Answers (1)
Yes, it would be unusal for the mean of a sample of 3 to be 115 or more because there is only a 4.18% chance for this to happen. P(X >= 115) = P(X >= (115 - 100) / sqrt(15^2 / 3)) = P(X >= 1.732050808) = 0.0418
