Question
In: Statistics and Probability
1.) Now use Minitab and attach output for the problem below? A random sample of 59...
1.) Now use Minitab and attach output for the problem below?
A random sample of 59 students was selected from the PSU student data base. Each student was asked their Sex and Height (in inches). Below are the summary results:
|
Sex |
N |
Mean |
SD |
|
Female |
42 |
66.10 |
2.58 |
|
Male |
17 |
70.12 |
3.66 |
Using the summary information, estimate with 99% confidence the
difference in heights between the sexes and interpret these
results. What are the exact degrees of freedom used in the
calculation of the t-statistic?
Is there enough evidence at a 1% level of significance to conclude
that males, on average, are taller than females? Include
hypotheses, p-value, decision, and conclusion.
What assumptions would need to be satisfied in order to safely use
and interpret the results?
Solutions
orchestra answered 2 years agoRelated Solutions
1.) Now use Minitab and attach "Output" for the problem below? A random sample of 59...
1.) Now use Minitab and attach "Output" for the problem
below?
A random sample of 59 students was selected from the PSU student
data base. Each student was asked their Sex and Height (in inches).
Below are the summary results:
Sex
N
Mean
SD
Female
42
66.10
2.58
Male
17
70.12
3.66
a.) Using the summary information, estimate with 99% confidence
the difference in heights between the sexes and interpret these
results. What are the exact degrees of freedom used...
Begin by re-writing the problem. Minitab is required; attach or include your output. Type (use Word)...
Begin by re-writing the problem. Minitab is required; attach or
include your output. Type (use Word) your assignment; you may
handwrite equations.
Semester GPAs are compared for seven randomly chosen students
in each class level at Oxnard University. Do the data show a
significant difference in mean GPAs?
GPA for Randomly Selected Students in Four Business
Majors
Accounting
Finance
Human Resources
Marketing
2.48
3.16
2.93
3.54
2.19
3.01
2.89
3.71
2.62
3.07
3.48
2.94
3.15
2.88
3.33
3.46
3.56
3.33...
Begin by re-writing the problem. Minitab is required; attach or include your output. Type (use Word)...
Begin by re-writing the problem. Minitab is required; attach or
include your output. Type (use Word) your assignment; you may
handwrite equations.
Semester GPAs are compared for seven randomly chosen students
in each class level at Oxnard University. Do the data show a
significant difference in mean GPAs?
GPA for Randomly Selected Students in Four Business
Majors
Accounting
Finance
Human Resources
Marketing
2.48
3.16
2.93
3.54
2.19
3.01
2.89
3.71
2.62
3.07
3.48
2.94
3.15
2.88
3.33
3.46
3.56
3.33...
Begin by re-writing the problem. Minitab is required; attach or include your output. Type (use Word)...
Begin by re-writing the problem. Minitab is required; attach or
include your output. Type (use Word) your assignment; you may
handwrite equations.
Semester GPAs are compared for seven randomly chosen students
in each class level at Oxnard University. Do the data show a
significant difference in mean GPAs?
GPA for Randomly Selected Students in Four Business
Majors
Accounting
Finance
Human Resources
Marketing
2.48
3.16
2.93
3.54
2.19
3.01
2.89
3.71
2.62
3.07
3.48
2.94
3.15
2.88
3.33
3.46
3.56
3.33...
Begin by re-writing the problem. Minitab is required; attach or include your output. Type (use Word)...
Begin by re-writing the problem. Minitab is required; attach or
include your output. Type (use Word) your assignment; you may
handwrite equations.
Semester GPAs are compared for seven randomly chosen students
in each class level at Oxnard University. Do the data show a
significant difference in mean GPAs?
GPA for Randomly Selected Students in Four Business
Majors
Accounting
Finance
Human Resources
Marketing
2.48
3.16
2.93
3.54
2.19
3.01
2.89
3.71
2.62
3.07
3.48
2.94
3.15
2.88
3.33
3.46
3.56
3.33...
Begin by re-writing the problem. Minitab is required; attach or include your output. Use Word; you may...
Begin by re-writing the problem. Minitab is required;
attach or include your output. Use Word; you may handwrite
equations. You may want to refer to the Minitab handout for Chapter
11, which may be found on Canvas.
Quarterly GPAs are compared for seven randomly chosen students
in each of the four business majors at Catalyst University. Do the
data show a significant difference in mean GPAs? The
data is in the file named GPA1.
GPA for Randomly Selected Students in Four Business...
Use Minitab and produce the appropriate output to answer the following questions. Attach or include the...
Use Minitab and produce the appropriate output to answer the
following questions. Attach or include the relevant Minitab
output.
Construct a scatter plot. Recalling what scatter plots are used
for, write a couple of sentences addressing what you observed from
the plot. Be sure to relate your observations to the purpose of
using scatter plots in regression. (4 points)
Can we conclude that median family income helps in predicting
median home price? Follow the 7 steps for hypothesis testing. (10...
The results in the form of a Minitab output are shown below. Use this output to...
The results in the form of a Minitab output are shown below. Use
this output to answer the questions that follow.
------------------------------------------------------------------------------------------------------------------------------------------
Descriptive Statistics: HOURS
Variable N
Mean SE
Mean StDev
Minimum
Q1
Median
Q3 Maximum
HOURS 95
16.6
0.318
3.10
6.0
15.0
16.0
18.0 24.0
-------------------------------------------------------------------------------------------------
Measures of Central Tendency: Compare the Mean
to the Median. What is your conclusion regarding the shape of the
distribution, degree of skewness, and the possible presence of
outliers? Explain your answer in...
Use Minitab to answer the questions. Make sure to copy all output from the Minitab: 1. ...
Use Minitab to answer the questions. Make sure to copy
all output from the Minitab:
1. Followings Tables shows previous 11 months stock
market returns.
Date
Monthly
SP500 Return
Monthly DJIA Return
12/7/2007
-0.8628
-0.7994
1/8/2008
-6.1163
-4.6323
2/8/2008
-3.4761
-3.0352
3/8/2008
-0.5960
-0.0285
4/8/2008
4.7547
4.5441
5/8/2008
1.0674
-1.4182
6/8/2008
-8.5962
-10.1937
7/8/2008
-0.9859
0.2468
8/8/2008
1.2191
1.4548
9/8/2008
-9.2054
-6.0024
10/8/2008
-16.8269
-4.8410
Let’s consider the population mean of SP500 as µ1 and that of
DJIA as µ2...
Use Minitab to answer the questions. Make sure to copy all output from the Minitab: The...
Use Minitab to answer the questions. Make sure to copy
all output from the Minitab:
The U.S. Bureau of Labor Statistics publishes a variety of
unemployment statistics, including the number of individuals who
are unemployed and the mean length of time the individuals have
been unemployed. For November 1998, the Bureau of Labor Statistics
reported that the national mean length of time of unemployment was
14.5 weeks.
The mayor of Chicago has requested the study on the status of
unemployment...
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