Question 288 of 417EasyMCQ
A die is tossed 5 times, getting an odd number is a "success". Find the variance of the number of successes.
Solutions · 1
Official solution
n=5, p=q=21.
\[\text{Variance} = npq = 5\times\frac12\times\frac12=\frac54\] Answer the question to unlock