Due:
Wednesday, October 24, 2007 11:59 PM EDT
Current Score:
30 out of 30
Question Score
Submission Options
Description
Homework 7 deals
with various
applications of
binomial probability
distributions.
Instructions
Homework 7
You are allowed 4
submissions. The due
date is 11:59 pm
Wednesday Oct. 24.
1.
10/10 points
Last Response

Show Details
All Responses
Notes
Assume that 13% of people are lefthanded. If we select 10 people at random,
answer the following questions:
a.
What is the probability that there are 3 lefties in the group?0.099
.099
(Use 3 decimal places.)
b.
What is the probability that there are at least 3 lefties in the group?0.131
.131
(Use 3 decimal places.)
c.
Find the expected number of righthanders in the group.8.7
8.7
d.
Find the standard deviation of the number of righthanders in the group.1.063
1.063
(Use 3 decimal places.)
e.
What is the probability that they are not all righthanded?0.752
.752
(Use
3 decimal places.)
f.
What is the probability that there are exactly 5 righties and 5 lefties?0.0047
.0047
(Use 4 decimal places.)
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Documentg.
What is the probability that the majority is righthanded?0.995
.995
(Use
3 decimal places.)
2.
2/2 points
Last Response

Show Details
All Responses
Notes
A state endofgrade exam in American History is a multiplechoice test that has
50 questions with 4 answer choices for each question. A student must get at
least 25 correct to pass the test, and the questions are very difficult.
Question 1
This is the end of the preview.
Sign up
to
access the rest of the document.
 Spring '08
 reiland
 Business, Options, Lefthandedness, World Series, decimal places, Handedness

Click to edit the document details