Kelsie works at a bicycle shop as a salesperson. She records the number of bicycles she sells on a daily basis. Here is the probability distribution of
B
=
B=B, equals the number of bicycles Kelsie sells on a randomly selected day, and
T
=
T=T, equals the time she spends filling out daily sales reports.
B
=
#
of bicycles sold
B=# of bicycles soldB, equals, \#, start text, space, o, f, space, b, i, c, y, c, l, e, s, space, s, o, l, d, end text
0
00
1
11
2
22
3
33
T
=
time (minutes)
T=time (minutes)T, equals, start text, t, i, m, e, space, left parenthesis, m, i, n, u, t, e, s, right parenthesis, end text
0
00
10
1010
20
2020
30
3030
Probability
0.30
0.300, point, 30
0.50
0.500, point, 50
0.15
0.150, point, 15
0.05
0.050, point, 05
Find the expected value of the amount of time Kelsie spends filling out daily sales reports.