Stat 4714 HW 2 – Due Friday 9/3 at 1:15pm
Instructions: Complete all problems, showing as much work as possible. Follow HW submission guidelines as
explained in the syllabus.
1) A project manager for an engineering firm submitted bids to provide multidisciplinary engineering
design on four projects. The firm formally evaluates the chances that each bid will be accepted. The
following table summarizes the firm’s beliefs by project. We can reasonably assume that the
individual bids are independent.
Company
A
B
C
D
Probability
.3
.7
.2
.4
a) Find the probability that all four bids are accepted.
b) Find the probability that only company B is accepts the bid.
c)
Find the probability that at least one bid is accepted.
Note: Use the fact that P(A U B U C U D) = 1 – P(A
C
B
C
C
C
D
C
)
2) An experiment consists of tossing a die and then flipping a coin. The coin is flipped once if the
number on the die is even. If it is odd, the coin is flipped twice.
a.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 '07
 MQLemons
 Probability theory, project manager, memory chips, probabili ty, ree branches

Click to edit the document details