(1)以圖示說明樁載重試驗之程序、配置及用途。(10分)

12.(a) If two fair dice are rolled 4 times, what is the probability of at least one 6 (on either die) in exactly two of these 4 rolls? (5 points) (b) Suppose that, on average, in every two pages of a book there is one typographical error.What is the probability of at least one error on a specific page of the book? (5 points)