Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Business Statistics and Research Methods Probability Distribution
A discrete random variable X has the following probability distribution.
| X | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| P(X) | K | 2K | 2K | 3K | K2 | 2K2 | 7K2 + K |
What is the value of K?
1
\(\frac{1}{20}\)
2
\(\frac{1}{30}\)
3
\(\frac{1}{40}\)
4
\(\frac{1}{10}\)