Math 155: Practice Questions
September 29, 2011
1. (Focus Problem: Fireies) Suppose you are conducting a study to compare rey populations
exposed to normal daylight/darkness conditions with rey populations exposed to continuous light
(24 hours a day). You
Math 251: Practice Questions from Chapters 13
Hints and Answers
I.A. Levels of Data, Types of Samples
I.A.1. Categorize the following data according to level: nominal, ordinal, interval, or ratio.
(a) Time of rst class.
(b) Length of time to complete an e
Math 155 Rough Answers
FT.A Hypothesis test on Proportions
FT.A.1. (a) Suppose that a February 2007 Gallup poll of 1200 randomly selected voters found
that 53 percent support George W. Bushs energy policy. Conduct an hypothesis test at a level of
signican
Math 251: Practice Questions
(Hints and Rough Answers)
Review II. Questions from Chapters 46
II.A Probability
II.A.1. (a) 120/500 = .240
(b) 0/200 = 0
(c) 300/500 = .600
(d) 120/300 = .400
(e) 120/500 = .240
(f) No, because P (B|F ) = P (F )the probabilit
Math 155, In-class Exercise
October 3, 2011
Names:
Instructions. Turn in worksheet at the end of class for credit. This is a participation worksheet.
1. Consider the data 1,2,2,3,4,6,17,18,20,20,21,22,24,26,27,27,27,31,35,35,36,37,38,38,38
40,40,40,40,42,
Math 155
September 29, 2011
Names:
1. (Focus Problem: Fireies) Suppose you are conducting a study to compare rey populations
exposed to normal daylight/darkness conditions with rey populations exposed to continuous light
(24 hours a day). You set up two r
Math 155: Practice Questions
September 27, 2011
Names:
1. Categorize the following data according to level: nominal, ordinal, interval, or ratio.
(a) Length of time to complete an exam.
(b) Course evaluation scale: poor, acceptable, good.
(c) The temperat
Math 251: Practice Questions
September 27, 2011
1. Categorize the following data according to level: nominal, ordinal, interval, or ratio.
(a) Length of time to complete an exam.
(b) Course evaluation scale: poor, acceptable, good.
(c) The temperature in
Math 155: Practice Questions for Test III
Rough Hints and Answers
III.A.1 (a) Convert x to z using z =
x
. Then
P (67 x 69) = P (.33 z .33) = .6293 .3707 = .2586.
x
.
(b) The sample size is n = 9, and so x = / 9 = 3/3 = 1. Then convert x to z using z =
x
Math 155: Practice Questions for Test III
Hints and Answers
The following are some of the types of questions you may see on Test III. Many of the questions
are from the current or previous editions of the text used for this class, so you may recognize the
Math 155 Review for Final Test
Notes. The nal test will be comprehensive with approximately 1/4 of the test covering new material.
See your previous tests and reviews for an overview of the remaining (approximately) 3/4 of the nal
test. A rough estimate i
Math 251, Final Exam Name: Instructions: Do 12 of the following 13 questions. Each question is worth 10 pts; show all appropriate work. This is similar to nals from past years. Do not use this as a study guide, there are many topics that may be on your na
Math 155: Practice Questions
Review II. Questions from Chapters 46
For some examples of recent tests on this or similar material, see copies of Test 2 from Winter
2007, Spring and Autumn 2007, as available on the instructors website. See your assignments,
Review Questions on Chapters 13
For further practice on questions from Chapters 1 to 3, see Test 1 from Autumn 2007, Spring 2007,
Winter 2007, and from Autumn 2003 from Math 251 available at this link.
I.A. Levels of Data, Types of Samples
I.A.1. Categori