Exam-Style Problem

โฌ… Back to Subchapter
Browsing as Guest. Progress, bookmarks and attempts are disabled. Log in to track your work.
Nov 2019 p62 q5
2901

A fair red spinner has four sides, numbered 1, 2, 3, 3. A fair blue spinner has three sides, numbered -1, 0, 2. When a spinner is spun, the score is the number on the side on which it lands. The spinners are spun at the same time. The random variable X denotes the score on the red spinner minus the score on the blue spinner.

(i) Draw up the probability distribution table for X.

(ii) Find \(\text{Var}(X)\).

Log in to record attempts.
โฌ… Back to Subchapter