Probability
NCERT Class 12
CBSE
Grade 12
Question:
Find $k$ if the probability distribution of $X$ is:
$X = 0, 1, 2, 3$
$P(X) = 0.1, k, 2k, 0.3$
Step-by-Step Solution
3k + 0.4 = 1 \Rightarrow 3k = 0.6$. [1.0 Mark]
$k = 0.2$. [1.0 Mark]
---
🎯 Official CBSE Marking Scheme:
Setting up probability sum equation: 1.0 Mark
Evaluating $k = 0.2$: 1.0 Mark
Correct Answer:
Confused by the solution? Ask the AI to explain a specific step, tell you where you went wrong, or break down the key trap in this question.