3) Find the expected value of the number of times a newborn baby's crying wakes
its mother after midnight. The expected value is the expected number of times
per week a newborn baby's crying wakes its mother after midnight. Calculate the
standard deviation of the variable as well.
X
0
1
2
3
4
5
P(x)
P(x = 0) =
P(x = 1) = (11)
50
P(x = 2) =
2
50
23
50
P(x = 3) = 30
50
P(x = 5) =
P(x = 4) = 50
50