Question
In: Statistics and Probability
The table below represents data on a variable of interest collected from a single sample measured...
The table below represents data on a variable of interest collected from a single sample measured at two different points in time. A researcher is interested in testing whether scores are higher at the second measurements.
Time 1: 8 6 7 5 2 8 9 3 4 7
Time 2: 7 9 11 6 4 5 8 7 4 5
a) What are the appropriate hypotheses for this analysis?
b) What is/are the critical value(s) for this test at a 0.05 alpha level?
c) What is the estimated standard error for this test?
d) What is the observed value of the appropriate test statistic?
e) What is your decision regarding the stated hypotheses?
Solutions
orchestra answered 1 year agoRelated Solutions
The table below represents data on a variable of interest collected from a single sample. It...
The table below represents data on a variable of
interest collected from a single sample. It is known that the
variable of interest has a mean of 10 and a standard deviation of 5
in the general population. A researcher is interested in testing
whether the population from which this sample was selected is
different from the general population.
Data
9
7
12
5
6
4
8
11
3
7
What are the appropriate hypotheses for this analysis?
What is/are...
6) The table below represents data on a variable of interest collected from a single sample...
6) The table below represents data on a variable of interest
collected from a single sample measured at two different points in
time. A researcher is interested in testing whether scores are
higher at the second measurements.
Time 1 8 6 7 5 2 8 9 3 4 7
Time 2 7 9 11 6 4 5 8 7 4 5
a) What are the appropriate hypotheses for this analysis? b)
What is/are the critical value(s) for this test at a...
The table below represents data on a variable of interest collected from two independent groups, in...
The table below represents data on a variable of interest
collected from two independent groups, in which each group was
randomly assigned 10 participants. A researcher is interested in
testing whether the two groups have different means.
Group 1 = 4, 4, 2, 6, 3, 5, 6, 1, 5, 4
Group 2 = 6, 10, 4, 7, 8, 5, 9, 10, 6, 7
Please bold answers and show work
a) What are the appropriate hypothesis for this analysis?
b) What...
Data collected from a sample of houses are organized and stored in the Table below. Develop...
Data collected from a sample of houses are organized and
stored in the Table below. Develop a regression model that predicts
the Assessed value of a house based on size of the house and
presence of a fireplace (Fireplace=1. No fireplace=0).
assessed value
size
fireplace
234.4
2
1
227.4
1.71
0
225.7
1.45
0
235.9
1.76
1
229.1
1.93
0
220.4
1.2
1
225.8
1.55
1
235.9
1.93
1
228.5
1.59
1
229.2
1.5
1
236.7
1.9
1
229.3
1.39...
Consider the data in the table collected from three independent populations. Sample 1 Sample 2 Sample...
Consider the data in the table collected from three independent
populations.
Sample 1
Sample 2
Sample 3
4
3
4
a) Calculate the total sum of squares (SST) and partition the
SST into its two components, the sum of squares between (SSB) and
the sum of squares within (SSW).
2
2
2
9
1
1
5
b) Use these values to construct a one-way ANOVA table.
c) Using alphaαequals=0.05,
what conclusions can be made concerning the population
means?
Consider the data in the table collected from three independent populations. Sample 1 Sample 2 Sample...
Consider the data in the table collected from three independent
populations.
Sample 1
Sample 2
Sample 3
33
11
88
a) Calculate the total sum of squares (SST) and partition the
SST into its two components, the sum of squares between (SSB) and
the sum of squares within (SSW).
66
33
22
99
88
33
1111
b) Use these values to construct a one-way ANOVA table.
c) Using
alphaαequals=0.100.10,
what conclusions can be made concerning the population
means?
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The table below shows data collected on the vessel calls for a port in Ghana, from...
The table below shows data collected on the vessel calls for a
port in Ghana, from 2007-2016 to study the relationship between the
number of Commercial Vessels (C.V.) and Offshore Vessels (O. V.).
Year 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 C. V. (X)
527 486 481 558 623 611 606 543 615 673 O. V. (Y ) 67 129 475 719
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= x)...
The sample data below have been collected based on a simple random sample from a normally...
The sample data below have been collected based on a simple
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parts a and b. 5 4 0 5 7 6 9 0 8 4 a. Compute a 98% confidence
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places as needed. Use ascending order.) b. Show what the impact
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The coin size data (measured in millimeters) collected from each group is shown below. Low Income...
The coin size data (measured in millimeters) collected from each
group is shown below.
Low Income
High Income
25
22
20
24
17
19
20
22
26
24
27
20
24
22
20
15
21
16
21
9
24
20
21
22
25
23
20
17
24
19
24
21
24
21
21
You can copy the data into Excel by highlighting the data,
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Let's say you have collected data from a large sample of participants on some variable that...
Let's say you have collected data from a large sample of
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it mean to say the variable is normally distributed? What is
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