Name: Expected value: solution walkthrough
Uploaded: 2026-11-13
Duration: 1 min 37 s
Description: A spinner lands on 12 points with probability 1/2, on 3 points with probability 1/3, and on 6 points with… Try it, then watch the animated solution.

Common Core: S-MD.2

Problem 16 of 25sta-016

A spinner lands on 12 points with probability $\tfrac{1}{2}$ , on 3 points with probability $\tfrac{1}{3}$ , and on 6 points with probability $\tfrac{1}{6}$ . What is the expected number of points on one spin?

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Solution walkthrough1:37