engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Engineering Mathematics Probability and Statistics Random Variables Basics
X and Y are independent normal variables with mean 50 and 80 respectively and standard deviation as 4 and 3 respectively. What is the distribution of X + Y?
1
N(130, 7)
2
N(130, 3)
3
N(130, 5)
4
N(130, 4)