Math 151, Spring 2011
Jo Hardin, HW #13
Homework due on
Thursday, April
21
th
, start of class.
1. DeGroot (3
rd
or 4
th
ed.), section 5.2: # 6, 7, 9, 10
2. DeGroot (3
rd
ed. = section 5.11 or 4
th
ed.), section 5.9: # 3, 5, 6
3. Here you are going to calculate some binomial probabilities. Look back to HW 5 to
remember how to compute binomial probabilities in R.
(a) The ASPC is booking a charter ﬂight to San Francisco for spring break. They
assume that some students will oversleep on the day of departure and won’t make
it to the ﬂight. As a result, they decide to sell more tickets for the ﬂight than
seats on the airplane. Let p=0.98 be the probability that student shows up for the
ﬂight, and assume that the plane seats 100 people and they sold 105 tickets. What
is the probability that someone is left at the airport when the plane departs? How
many tickets should they sell to keep the probability that someone is stranded
less than 0.10?
(b) The doomsday airline operates both 2 and 4 engine planes. In order for the plane
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This note was uploaded on 02/17/2012 for the course MATH 151 taught by Professor Jo.h during the Spring '10 term at Pomona College.
 Spring '10
 JO.H
 Math, Probability

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