Find the mean μ, variance σ 2 for the following probability distribution: - Wired Faculty

Probability

Question

Find the mean μ, variance σ² for the following probability distribution:

Name: Wired Faculty - The Best Learning App
Rating: 4.6 (1864 reviews)

Solution

(i) Mean

straight mu space equals space sum from blank to blank of straight X thin space straight P left parenthesis straight X right parenthesis space equals space 36 over 30 space equals space 1.2

(ii) Variance

straight sigma squared space equals space sum from blank to blank of straight X squared straight P left parenthesis straight X right parenthesis space minus space left square bracket sum from blank to blank of straight X thin space straight P left parenthesis straight X right parenthesis right square bracket squared

equals space 60 over 30 minus left parenthesis 1.2 right parenthesis squared space space equals space 2 minus 1.44 space equals space 0.56.

For Daily Free Study Material Join wiredfaculty