A small start up tech company has 4 customer service telephone lines. Letdenote the number of phone lines in use at any given time. Suppose that the probability distribution of is as follows: (10 points) 0

0.10

1

0.16

2

a

3

0.31

4

0.22

a.) Determine the value of if the data above represent a discrete probability distribution.

b.) Calculate and interpret the expected value of .

c.) Calculate the standard deviation of .

w'x is 0.

hope it

29933333.33

step-by-step explanation:

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d