Math 1011 Homework Set 1
Due January 29, 2014
1. Please read the reading materials for chapter 1-2 before doing the problem set. (The materials are examples from the textbook. They help you understand the concepts introduced
in class better, and they are
Math 1011 Homework Set 4
Due March 5, 2014
1. A gambler loses ten times running at roulette. He decides to continue playing because he
is due for a win, by the law of averages. A bystander advises him to quit, on the grounds
that his luck is cold. Who is
Math 1011 Homework Set 2
Due February 12, 2014
1. Suppose we have two lists: (i) 1, 3, 5, 7, 9, 11; and (ii) 1001, 1003, 1005, 1007, 1009, 1011.
(a) Find the average and standard deviation for each of the lists.
(b) From your result in (a), can you nd any
Math 1011 Homework Set 5
Due March 19, 2014
1. Suppose we have the following lists:
(a) 1, -2, -2
(b) 15, 15, 16
(c) -1, -1, -1, 1
(d) 0, 0, 0, 1
(e) 0, 0, 2
Match the lists with the SDs:
i.
1/3 2/3
ii. 2
1/3 2/3
iii. 3
1/3 2/3
iv.
1/4 3/4
v. 2
1/4 3/4
Math 1011 Homework Set 3
Due February 19, 2014
1. On the Math SAT, men have a distinct edge. In 2005, for instance, the men averaged
about 538, and the women averaged about 504.
(a) Estimate the percentage of men getting over 700 on this test in 2005.
(b)
Math 1011 Homework Set 8
Due April 16, 2014
1. True or false, and explain:
(a) The P-value of a test equals its observed signicance level.
(b) The alternative hypothesis is another way of explaining the results; it says the dierence is due to chance.
(c)
Math 1011 Homework Set 7
Due April 9, 2014
1. The Residential Energy Consumption Survey found in 2001 that 47% of American households had internet access. A market survey organization repeated this study in a certain
town with 25,000 households, using a s
Math 1011
Midterm 1
Feb 21 2014
Name:
ID:
1. True or false, and explain briey if your answer is false:
(a) The dierence between the controlled experiment and the observational study is that:
in controlled experiment there is a control group while in obsev
Math 1011
Midterm 2
Mar 28 2014
Name:
ID:
1. True or false, and explain briey if your answer is false:
(a) A parameter is a numerical fact about a population. In general, a parameter cannot
be determined exactly, but can only be estimated. (5 points)
(b)
Math 1011 Homework Set 6
Due March 26, 2014
1. A survey is carried out by the nance department to determine the distribution of household size in a certain city. They draw a simple random sample of 1,000 households. After
several visits, the interviewers
Math 1011
Practice Exam Solutions
April 28 2014
Name:
ID:
1. True or false, and explain briey if your answer is false:
(a) The condence level 95% means that there is a 95% chance that the true value (of
the parameter) is in the given condence interval.
(b
Math 1011
Final Exam
May 1 2014
Name:
ID:
1. True or false, and explain briey if your answer is false:
(a) In an observational study, it is the subjects who assign themselves to the dierent
groups (the treatment group and the control group). The investiga