1110
Correlation/ Regression
Final Exam Review
sweekley
X = # of desserts eaten
Y = # of pounds lost in a month.
*Calculate Pearson r with the following data, and then calculate the regression equatio
1110 e-stats Exam 1 review EXTRA
sweekley/ spring2013
1. Given that there were 200 individuals studied:
working
sick
healthy
40
35
75
vacationing
45
85
80
115
125
Find the probability that:
p(W)
a. pe
1110 e-stats Exam 1 review #2: Probability
sweekley/f2013
1. Given that there were 500 individuals studied:
working
sick
healthy
170
80
vacationing
85
165
Find the probability that:
p(V)
a. person was
1110 Exam 1 review sheet #4
Given, an IQ test with:
weekley/f2013
100
16
What percent of IQ scores will fall above a z-score of -1.6?
What proportion of scores falls between an IQ of 90 and an IQ of
Concept Review for Final Exam
weekley/1110
Concept Review for Final Exam
Using statistical terminology, identify which type of error is being made in the
following examples:
1. June takes a pregnancy
1110 e-stats Exam 1 Review #3
sweekley/f2013
Please put the following data into a GROUPED frequency distribution:
(Data represents the # of minutes it took subjects to solve a math problem).
Make your
1110 e-stats
sweekley
Exam 1 Review
I. Randomly picking numbers 1-20 out of a hat (replace numbers each time):
What are the chances of:
1. picking a 2?
2. picking a 2, and then a 15?
3. not getting a
Final exam t-test practice
sweekley
Final Exam t-test practice
Say that you know that the average typing speed for professional writers is 120 wpm.
Company X is offering a workshop that will, accordin
1110
More concept review questions for Final Exam
sweekley
1. What is a biased sample?
2. What is the difference between a random sample and a stratified sample?
3. What does it mean to control for a
ALEKS
Page 1 of 3
Normal versus standard normal density curves
Below is a graph of a normal distribution with mean
and standard deviation
probability of obtaining a value from this distribution that i
ALEKS
Page 1 of 3
Normal versus standard normal density curves
Below is a graph of a normal distribution with mean
and standard deviation
probability of obtaining a value from this distribution that i
ALEKS Jonathan J. Kirkendall - 02/23/2017 8:56:48 PM CST - Copyright 2017 UC Re. Page 1 of 2
Jonathan J. Kirkendall - 02/23/2017 8:56:48 PM CST
College Introduction to Statistics / MA 320 Statistics -
ALEKS Jonathan J. Kirkendall - 02/23/2017 10:19:42 PM CST - Copyright 2017 UC R. Page 1 of 3
Jonathan J. Kirkendall - 02/23/2017 10:19:42 PM CST
College Introduction to Statistics / MA 320 Statistics
ALEKS
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Probability of dependent events
A pizza restaurant offers
different toppings: of them are vegetarian and of them are
non-vegetarian. A customer selects her first topping at random an
ALEKS
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Selecting a distribution for inferences on the population mean
Suppose that we want to estimate the mean daily profit of a convenience store. For this purpose, we
sample of days. The
ALEKS
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Standard normal values: Basic
Let
be a standard normal random variable. Use the calculator provided to determine the
value of
such that
.
Round your answer to at least two decimal pl
ALEKS
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Expectation and variance of a random variable
Let
be a random variable with the following probability distribution:
Value
Find the expectation
and variance
of
10
0.75
20
0.10
30
0.05
ALEKS Jonathan J. Kirkendall - 02/23/2017 9:10:07 PM CST - Copyright 2017 UC Re. Page 1 of 2
Jonathan J. Kirkendall - 02/23/2017 9:10:07 PM CST
College Introduction to Statistics / MA 320 Statistics -
ALEKS
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Conditional probability: Basic
At a certain college,
% of the students are female, and
engineering. Furthermore,
% of the students major in civil
% of the students both are female an
ALEKS
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Central limit theorem: Sample mean
Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol
onset of withdrawal is experienced a mean of 40 hou
ALEKS
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Discrete probability distribution: Word problems
Suppose that the genders of the three children of a certain family are soon to be revealed.
Outcomes are thus triples of "girls" ( )
Print
Co
ndi
tio
nal
pro
ba
bili
ty:
Ba
sic
Of
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olin
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gasolineandoil.Atotalof %purchaseoil.
(a)Whatistheprobabilityth
ALEKS
Page 1 of 3
Standard normal values: Basic
Let
be a standard normal random variable. Use the calculator provided to determine the
value of
such that
.
Carry your intermediate computations to at l
ALEKS
Page 1 of 1
Intersection and conditional probability
Suppose that a certain college class contains
psychology majors, and
students. Of these,
are seniors,
are neither. A student is selected at r
ALEKS
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Mean, median, and mode: Comparisons
The following list contains the average annual total returns (in percentage points) for
online brokerage firm's "all-star" list.
mutual fun
-5, -4
ALEKS
Page 1 of 3
Normal versus standard normal density curves
Below is a graph of a normal distribution with mean
and standard deviation
probability of obtaining a value from this distribution that i
ALEKS
Page 1 of 2
Binomial problems: Basic
A TV executive is interested in the popularity of a particular cable TV show. She has been told
that a whopping
of American households would be interested in
ALEKS
Page 1 of 1
Standard normal values: Basic
Let
be a standard normal random variable. Use the calculator provided to determine the
value of
such that
.
Carry your intermediate computations to at l
Print
Co
ndi
tio
nal
pro
ba
bili
ty:
Ba
sic
Of
the
driv
ers
wh
o
sto
pat
a
gas
stat
ion,
%
pur
cha
se
gas
olin
e,
and
%
pur
cha
se
bot
h
gasolineandoil.Atotalof %purchaseoil.
(a)Whatistheprobabilityth