A die is rolled 50 times. What is the expected value of sum of 50 rolls and and standard deviation of the sum of 50 rolls?
if you roll a die once so expected value comes to to be 3.5 if you roll 50 times to expected value comes to be 50*3.5 = 175 if you roll a die once so variance comes to be 2.916667 if you roll 50 times to variance comes to be 50*2.916667 and stdev will be sqrt(50*2.916667)
