Question
Easy
Solving time: 2 mins
There are 4 cards numbered 1 to 4, one number on one card. Two cards are drawn at random without replacement. Let X denote the sum of the numbers on the two drawn cards. Find the mean and variance of X.
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Question Text | There are 4 cards numbered 1 to 4, one number on one card. Two cards are drawn at random without replacement. Let X denote the sum of the numbers on the two drawn cards. Find the mean and variance of X. |
Updated On | Feb 12, 2023 |
Topic | Probability |
Subject | Mathematics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 1 |
Upvotes | 196 |
Avg. Video Duration | 16 min |