The probability that they will sell 6 or more contracts three days in a row is 0.001 (0.1 x 0.1 x 0.1).
Mean: 6.2
Variance: 4.68
Standard Deviation: 2.16
Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean, variance, and standard deviation for this probability distribution.
X
4
5
6
8
10
P (X)
0.4
0.3
0.1
0.15
0.05
What is the probability that they will sell 6 or more contracts three days in a row?
1 answer