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d.
C.
2. (9 points)
The number of pizzas that are delivered each day with the corresponding probabilities is
shown in Table
2.
Number of deliveries, X
20
21
22
23
24
Probability, P(X)
0.10
0.20
k
0.30
0.15
Table 2
C.
b.
a
Given k is a constant, find the value of k. (2 points)
Find the probability that the number of pizzas delivered each day is more than 21.
(2 points)
Calculate the mean for the number of pizzas delivered each day. (2 points)
Compute the variance for the number of pizzas delivered each day. (3 points)