Car rental. A car rental agency has facilities at both JFK and LaGuardia airports. Assume that a car rented at either airport must be returned to one or the other airport. If a car is rented at LaGuardia, the probability that it will be returned there is .8 ; if a car is rented at JFK. the probability that it will be returned there is .7 . Assume that the company rents all its 100 cars each day and that each car is rented (and returned) only once a day. If we start with 50 cars at each airport, then (A) What is the expected distribution on the next day? (B) What is the expected distribution 2 days later?
Car rental. A car rental agency has facilities at both JFK and LaGuardia airports. Assume that a car rented at either airport must be returned to one or the other airport. If a car is rented at LaGuardia, the probability that it will be returned there is .8 ; if a car is rented at JFK. the probability that it will be returned there is .7 . Assume that the company rents all its 100 cars each day and that each car is rented (and returned) only once a day. If we start with 50 cars at each airport, then (A) What is the expected distribution on the next day? (B) What is the expected distribution 2 days later?
Solution Summary: The author calculates the expected distribution on the next day, if a car rental agency has facilities at both JFK and LaGuardia airports.
Car rental. A car rental agency has facilities at both JFK and LaGuardia airports. Assume that a car rented at either airport must be returned to one or the other airport. If a car is rented at LaGuardia, the probability that it will be returned there is
.8
; if a car is rented at JFK. the probability that it will be returned there is
.7
. Assume that the company rents all its
100
cars each day and that each car is rented (and returned) only once a day. If we start with
50
cars at each airport, then
(A) What is the expected distribution on the next day?
(B) What is the expected distribution
2
days later?
EXAMPLE 3
Find
S
X
√√2-2x2
dx.
SOLUTION Let u = 2 - 2x². Then du =
Χ
dx =
2- 2x²
=
信
du
dx, so x dx =
du and
u-1/2 du
(2√u) + C
+ C (in terms of x).
Let g(z) =
z-i
z+i'
(a) Evaluate g(i) and g(1).
(b) Evaluate the limits
lim g(z), and lim g(z).
2-12
(c) Find the image of the real axis under g.
(d) Find the image of the upper half plane {z: Iz > 0} under the function g.
k
(i) Evaluate
k=7
k=0
[Hint: geometric series + De Moivre]
(ii) Find an upper bound for the expression
1
+2x+2
where z lies on the circle || z|| = R with R > 10. [Hint: Use Cauchy-Schwarz]
Chapter 9 Solutions
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
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Discrete Distributions: Binomial, Poisson and Hypergeometric | Statistics for Data Science; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=lHhyy4JMigg;License: Standard Youtube License