Exam-Style Problem

โฌ… Back to Subchapter
Browsing as Guest. Progress, bookmarks and attempts are disabled. Log in to track your work.
June 2023 p51 q6
3335

Eli has four fair 4-sided dice with sides labelled 1, 2, 3, 4. He throws all four dice at the same time. The random variable X denotes the number of 2s obtained.

(b) Complete the following probability distribution table for X.

x01234
P(X = x)\(\frac{81}{256}\)\(\frac{3}{64}\)\(\frac{1}{256}\)

Eli throws the four dice at the same time on 96 occasions.

(d) Use an approximation to find the probability that he obtains at least two 2s on fewer than 20 of these occasions.

Log in to record attempts.
โฌ… Back to Subchapter