Math 2311
Written Homework 7 (Sections 5.4 5.6)
Name:_ PeopleSoft ID:_
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Math 2311 EMCF Homework 1
Sections 1.1-1.4
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Math 2311 EMCF Homework 3
Sections 2.2-2.4
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Math 2311 EMCF Homework 4
Sections 3.1-3.3
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Math 2311 EMCF Homework 11
Sections 8.3 - 8.5
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Math 2311 EMCF Homework 2
Sections 1.5-2.1
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Math 2311 EMCF Homework 9
Sections 7.1 - 7.5
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Math 2311 EMCF Homework 7
Sections 5.4-5.6
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EMCF and choose ehw
Math 2311 EMCF Homework 12
Sections 8.1 - 8.6
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Math 2311 EMCF Homework 6
Sections 5.1-5.3
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EMCF and choose ehw
Math 2311
Written Homework 10 (Sections 8.1 8.2)
Name:_ PeopleSoft ID:_
Instructions:
Homework will NOT be accepted through email or in person. Homework must be submitted through
CourseWare BEFORE the deadline.
Print out this file and complete the probl
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Qu iz 8
Question 1
Which of the following would be the LSRL for the given data?
x
17
43
37
26
21
16
14
=
e)
17
=
d)
11
=
c)
10
=
b)
5
y
a)
3
None of the above
Question 2
Determine the correlation coefficient for the data shown in this ta
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Qu iz 9
Question 1
Identify the population of interest the following situation:
In order to assess the membership's attitudes about a new Supreme Court decision, a local bar association selects a SRS of 100 lawyers
from its membership li
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Quiz 10
Question 1
The z-score associated with the 97.5 percent confidence interval is
a)
2.160
b)
1.900
c)
2.241
d)
2.744
e)
1.960
f)
None of the above
Question 2
What will reduce the width of a confidence interval?
a)
Decrease confiden
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Quiz 11
Question 1
As the length of the confidence interval for the population mean decreases, the degree of confidence in the interval's actually containing the
population mean
a)
does not change
b)
increases
c)
decreases
Question 2
The
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Quiz 12
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Question 1
You did not answer the question.
In a hypothesis test, if the computed P-value is greater than a specified level of significance, then we
a)
reject the null hypothesis.
b)
fail to reject the nul
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Quiz 13
You scored 0 out of 100
Question 1
You did not answer the question.
In a hypothesis test, if the computed P-value is greater than a specified level of significance, then we
a)
reject the null hypothesis.
b)
retest with a differen
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Quiz 14
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Question 1
You did not answer the question.
State the type of hypothesis test to be used in the following situation:
Quart cartons of milk should contain at least 32 ounces. A sample of 22 cartons containe
Math 2311
Written Homework 11 (Sections 8.3 8.5)
Name:_ PeopleSoft ID:_
Instructions:
Homework will NOT be accepted through email or in person. Homework must be submitted through
CourseWare BEFORE the deadline.
Print out this file and complete the probl
PRINTABLE VERSION
Qu iz 7
Question 1
Which of the following would be the scatterplot for the given data?
x
8
11
12
14
17
y
a)
3
23
28
29
42
27
41
b)
c)
d)
e)
None of the above
Question 2
What can be said about the relationship between the explantory varia
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Qu iz 6
Question 1
Suppose that x is normally distributed with a mean of 20 and a standard deviation of 3. What is P(16.91 x 24.59)?
a)
0.348
b)
0.438
c)
0.353
d)
0.437
e)
0.785
f)
None of the above
Question 2
Find a value of c so that P
Math 2311
Class Notes for Section 1.5
Graphs and Describing Distributions
Data can be displayed using graphs and there are several types of graphs to choose from. Some of the most
common graphs used in statistics are:
Bar graph
Pie Chart
Dot plot
Hist
Math 2311
Class Notes for Section 1.3
Another important question we want to answer about data is about its spread or dispersion. Roughly speaking,
the population standard deviation, , tells the average distance that data values fall from the mean. The
sta
Math 2311
Class Notes for Section 1.1&1.2
Instructor: S.Hafeez
Website: www.math.uh.edu/~shafeez
Email: shafeez@math.uh.edu
Things you need to do
Check my website and read the syllabus
Buy the course code from book store and log into courseware www.casa.u
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Qu iz 1
Question 1
True or False:
A sample is a subset of all possible data values for a given subject under consideration.
a)
False
b)
True
Question 2
True or False:
The standard deviation is the square of the variance.
a)
True
b)
False
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Qu iz 2
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Question 1
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A researcher randomly selects 2 fish from among 10 fish in a tank and puts each of the 2 selected fish into different containers. How many
ways can this be done?
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Qu iz 3
Question 1
The probability that a randomly selected person has high blood pressure (the event H) is P(H) = 0.2 and the probability that a randomly
selected person is a runner (the event R) is P(R) = 0.4. The probability that a ra
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Quiz 4
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Question 1
You did not answer the question.
Suppose you have a distribution, X, with mean = 10 and standard deviation = 3. Define a new random
variable Y = 5X - 5. Find the mean and standard deviation of Y.
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Qu iz 5
Question 1
Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes
from (0.7, 1) to (0.9, 2) in the xy-plane. What percent of observations fall b
Chinemerem Opara
Psychology 1300
Nicholas Armenti
September 6, 2016
Reaction Paper (Chapter 1)
Chapter one introduces what psychology is and why it is considered a science like
biology and chemistry. Psychology is the study of behavior and experience, als