Question

Using this distribution, what is the expected number of motor scooters to be rented out in a month?
A. 1
B. 1.5
C. 2
D. 2.5
E. 3

Answer 1

Answer:

b

Step-by-step explanation:

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Answer 2

Answer:

D. 2.5

Step-by-step explanation:

Since, the expected value is given by,

E[X] = x1p1 + x2p2 + x3p3 + x4p4 + x5p5

=(0)(1/32) + (1)(5/32) + (2)(10/32) + (3)(10/32) + (4)(5/32) + (5)(1/32)

= 0 + 5/32 + 20/32 + 30/32 + 20/32 + 5/32

= (5+20+30+20+5)/32

E[X] = 80/32 = 2.5