STAT-UB.0103
Homework Set 1
The abbreviation MBS10 refers to the 10th ed of the course textbook. MBS11 refers to the
11th ed.
1. Consider this set of 6 values:
131, 124, 184, 119, 166, 154
Find the mean, median, and standard deviation for this set.
2. Con

STAT-UB.0103
Homework Set 1
Solutions
1. Consider this set of 6 values: 131, 124, 184, 119, 166, 154
Find the mean, median, and standard deviation for this set.
SOLUTION: The total of the values is 878, so the average (mean) is x =
878
6
146.33.
The value

C22.0103
Homework Set 2
Spring 2012
Solutions
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1. MBS11, problem 3.18, page 129.
SOLUTION: If there are eight players, there are eight possibilities for the first-place
person and, thereafter, seven for the second-place

C22.0103
Spring 2012
Homework Set 1
Solutions
Homework assignments will be drawn from problems from the text, as well as from other
sources. Some of these will involve data files. All files will be available on the Web site
www.stern.nyu.edu/~gsimon/statd

STAT-UB.0103
SPRING 2012
Homework Set 4
Solutions
1. If Z is a standard normal random variable, find the probability that
a.
0 Z 1.24
d.
-0.88 < Z < 0.14
b.
Z > -0.45
e.
-1.13 < Z -0.92
c.
| Z | 0.80
f.
| Z | 0.70
SOLUTION:
In all problems involving the n

C22.0103 SPRING 2012 Homework Set 5
1. The value of a certain asset is currently at $50,000. The proportional weekly changes
in value have been modeled as lognormal with = 0.0024 and = 0.0044. (This means
P
that log t is assumed to be normally distributed

STAT-UB.0103
SPRING 2012
Homework Set 4
1. If Z is a standard normal random variable, find the probability that
a.
0 Z 1.24
d.
-0.88 < Z < 0.14
b.
Z > -0.45
e.
-1.13 < Z -0.92
c.
| Z | 0.80
f.
| Z | 0.70
2. If Z is a standard normal random variable, find

STAT-UB.0001
Homework Set 2
Fall 2013
1. If one card is selected at random from a standard deck of 52, find the probability that
a.
the selected card is a diamond () ;
b.
the selected card is a seven;
c.
the selected card is red;
d.
the selected card eith

STAT-UB.0103
Homework Set 5
(
COMPLETE ALL QUESTIONS FOR THIS HOMEWORK.
1. Based on a sample of 50 x-values having mean 35.36 and standard deviation 4.26,
(a)
test at the 0.05 level of significance the null hypothesis H 0 : = 34 versus
the alternative H1

STAT-UB.0103
Spring 2012
Homework Set 8
Solutions
1. Curtis was investigating the properties of a new vacuum cleaner motor in terms of a
standardized lab procedure. In this procedure, the motor was applied to a pile of gypsum
powder for five seconds, and

STAT-UB.0103 Spring 2012
Homework Set 8
You should of course understand all the formulas for test statistics and confidence
intervals related to this homework. However. the computation is much faster and
much more accurate with Minitab.
1. Curtis was inve

STAT-UB.0103
Spring 2012
Homework Set 8
You should of course understand all the formulas for test statistics and confidence
intervals related to this homework. However. the computation is much faster and
much more accurate with Minitab.
1. Curtis was inve

C22.0103
Spring 2011
Homework 7 solutions
1. Based on a sample of 50 x-values having mean 35.36 and standard deviation 4.26, find
a 95% confidence interval for the population mean.
SOLUTION: The 95% confidence interval for the population mean is x t0.025;

STAT-UB.0103
Spring 2011
Homework 7
1. Based on a sample of 50 x-values having mean 35.36 and standard deviation 4.26, find
a 95% confidence interval for the population mean.
2. The formula is used to select a sample size before doing an experiment. The t

C22.0103
Spring 2011
Homework 7
1. Based on a sample of 50 x-values having mean 35.36 and standard deviation 4.26, find
a 95% confidence interval for the population mean.
2
z
2. The formula n / 2 is used to select a sample size before doing an
E
experim

STAT-UB.0103
Spring 2012
Homework 6
Solutions
1. The data file M\MONET.MTP gives information on 430 paintings by Claude Monet.
Yes, Monet was a busy painter. Suppose that youd like to consider the relationship
between price at auction (C27) and size of pa

STAT-UB.0103 Spring 2012 Homework 6
1. The data file M\MONET.MTP gives information on 430 paintings by Claude Monet.
Yes, Monet was a busy painter. Suppose that youd like to consider the relationship
between price at auction (C27) and size of painting i

C22.0103 SPRING 2012 Homework Set 5 Solutions
1. The value of a certain asset is currently at $50,000. The proportional weekly changes
in value have been modeled as lognormal with = 0.0024 and = 0.0044. (This means
P
that log t is assumed to be normally d

STAT-UB.0103
Spring 2012
Homework 6
1. The data file M\MONET.MTP gives information on 430 paintings by Claude Monet.
Yes, Monet was a busy painter. Suppose that youd like to consider the relationship
between price at auction (C27) and size of painting in

C22.0103 SPRING 2012 Homework Set 5
1. The value of a certain asset is currently at $50,000. The proportional weekly changes
in value have been modeled as lognormal with = 0.0024 and = 0.0044. (This means
that is assumed to be normally distributed with me

STAT-UB.0103 SPRING 2012
Homework Set 4
1. If Z is a standard normal random variable, find the probability that
a.
0 Z 1.24
d.
-0.88 < Z < 0.14
b.
Z > 0.45
e.
1.13 < Z 0.92
c.
| Z | 0.80
f.
| Z | 0.70
2. If Z is a standard normal random variable, find the

C22.0103
Homework Set 3
Spring 2012 Solutions
1. The file CDCLifeTable is available from the course web site. Its in the M folder;
the direct link is
http:/people.stern.nyu.edu/gsimon/statdata/B01.1305/M/index.htm
This has data for non-Hispanic whites, wi

C22.0103
Homework Set 3
Spring 2012
1. The file CDCLifeTable is available from the course web site. Its in the M folder;
the direct link is
http:/people.stern.nyu.edu/gsimon/statdata/B01.1305/M/index.htm
This has data for non-Hispanic whites, with gender

C22.0103
Homework Set 2
Spring 2012
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1. MBS11, problem 3.18, page 129.
2. MBS11, problem 3.21, page 130. Note that the inclusion of grill #2 is required in the
selection.
3. MBS11, problem 3.23, page 130. This problem c

C22.0103
Spring 2012 Homework Set 1
Homework assignments will be drawn from problems from the text, as well as from other
sources. Some of these will involve data files. All files will be available on the Web site
www.stern.nyu.edu/~gsimon/statdata.
1. Co

C22.0103
Spring 2012
Homework Set 1
Homework assignments will be drawn from problems from the text, as well as from other
sources. Some of these will involve data files. All files will be available on the Web site
www.stern.nyu.edu/~gsimon/statdata.
1. Co

C22.0103
Homework Set 2
Spring 2012
1. MBS11, problem 3.18, page 129.
2. MBS11, problem 3.21, page 130. Note that the inclusion of grill #2 is required in the
selection.
3. MBS11, problem 3.23, page 130. This problem claims to be advanced, but it isnt.
He