Question
In: Statistics and Probability
Test to see if the population correlation coefficient is not equal to zero using significance of 0.05. What are your conclusions?
Consider the following
X: 4 7 2 6 6
Y: 6 9 5 5 7
Using XLS, calculate the correlation coefficient for this sample. Test to see if the population correlation coefficient is not equal to zero using significance of 0.05. What are your conclusions?
Solutions
orchestra answered 2 years agoRelated Solutions
For each problem test the significance the Spearman Rank Correlation Coefficient. Show your calculation of the...
For each problem test the significance the Spearman Rank
Correlation Coefficient. Show your calculation of the test
statistic rs. Please show work so i understand how to do it!
Exercise 1. Defense and wins. The data in the table below shows the
wining percentage and the yards per game allowed in the 2014-15
season for a random sampling of teams. At α = 0.05, can you support
the claim that there is a correlation between the winning
percentage and the...
For each problem test the significance the Spearman Rank Correlation Coefficient. Show your calculation of the...
For each problem test the significance the Spearman Rank
Correlation Coefficient. Show your calculation of the test
statistic rs.
Exercise 2. Income and commute time. The table below shows the
median income ($1000s) and commuter times (minutes) for a random
sample of 6 different places. At α = 0.05, can you reject the claim
that there is no correlation between median income and commuting
distance?
City
Family income
Commute time
Woodridge, Illinois
83
27.1
Urbandale, Idaho
82
17.0
La Palma,...
1. Given the following data, test at the 0.05 level of significance to see if the...
1. Given the following data, test at the 0.05 level of
significance to see if the number of dogs treated at two different
vet clients differs. Assume variances are equal.
Clinic A (doges treated per 10 randomly selected day); 10, 11, 15,
4, 8, 9, 14, 5, 18, 20 Clinic B (dogs treated per 7 randomly
selected day): 11, 16, 15, 18, 14, 16, 18
2. Given the following data, test to see if the company with newer
technology has...
True or False? A hypothesis test is conducted at to test whether the population correlation coefficient...
True or False? A hypothesis test is conducted
at to test whether the population correlation coefficient is zero.
If the sample size is 25 and the sample correlation coefficient is
0.6, then the critical values of the student t that define the
upper and lower tail rejection areas are 2.069 and -2.069,
respectively.
test the hypothesis (α = 0.05) that the population proportions of red and brown are equal...
test the hypothesis (α = 0.05) that the population proportions
of red and brown are equal (pred = pbrown). You are testing if
their proportions are equal to one another. NOTE: These are NOT
independent samples, but we will use this approach anyway to
practice the method. This also means that n1 and n2 will both be
the total number of candies in all the bags. The “x” values for red
and brown are the counts of each we found...
Homework Chapter 10: Compute the correlation coefficient State the hypothesis test the hypothesis at a=0.05. Use...
Homework Chapter 10:
Compute the correlation coefficient
State the hypothesis
test the hypothesis at a=0.05. Use Table 1
Determine the regression line equation if r is significant
Summarize the results
Gestation x 105 285 151 238 112
Longevity y 5 15 8 41 10
Using excel compute correlation coefficients, correlation matrix and test the significance of the correlation coefficients between...
Using excel compute correlation coefficients, correlation matrix
and test the significance of the correlation coefficients between
sales with price, sales with advertisments using alpha
0.05
Sales
Price
Adver
19.98
14.10
15.19
19.98
18.65
15.19
19.98
18.65
13.87
19.98
18.65
12.83
19.98
18.65
13.16
19.98
18.65
15.19
19.98
18.65
13.92
20.10
18.73
14.42
20.12
18.75
13.83
20.13
18.75
14.50
20.14
18.75
13.87
20.12
18.75
13.64
20.12
13.87
14.31
20.13
14.27
13.85
20.14
18.76
14.20
20.14
18.77
13.64
20.13
13.87
14.33
20.13
14.14...
Test for correlation between Barley and Corn prices using Spearman's rank correlation method, at the 0.05...
Test for correlation between Barley and Corn prices using
Spearman's rank correlation method, at the 0.05 significance
level.
Barley
Rank
Corn
Rank
d
d^2
4.89
4
3.21
1
3
9
4.52
1
3.22
2
-1
1
4.85
2
3.29
4
-2
4
4.97
6
3.23
3
3
9
5.12
9
3.33
5
4
16
4.91
5
3.4
6
-1
1
5.08
8
3.44
8
0
0
4.98
7
3.49
9
-2
4
4.87
3
3.43
7
-4
16
To test the following hypotheses at the 0.05 level of significance, using a sample size of...
To test the following hypotheses at the 0.05 level of
significance, using a sample size of
nequals=15.
H00
:
sigmaσsquared2equals=0.05
HSubscript Upper AA
:
sigmaσsquared2not equals≠0.05
What is the upper tail critical value? Round to three decimal
places as needed.
A.
27.488
B.
23.685
C.
26.119
D.
24.996
What is the purpose of using correlation as well as the interpretation of the correlation coefficient?...
What is the purpose of using correlation as well as the
interpretation of the correlation coefficient? In your video
response, please describe at least 2 examples of an extremely low
relationship among variables and an extremely high relationship
among variables. Finally, discuss the two most common statistical
techniques for determining relationships of variables.
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