Question
In: Statistics and Probability
Use "PLUC" data and the description for the dataset on the blackboard. Conduct a two sample...
|
Use "PLUC" data and the description for the dataset on the blackboard. Conduct a two sample independent t test to test if the population means of heights of male is higher than that of female. Use R to calculate the p-value. ***Answer is 0.8974*** |
| sex | hgt |
| m | 45.68187 |
| m | 54.76593 |
| m | 43.80479 |
| f | 46.1765 |
| m | 57.60508 |
| f | 40.02826 |
| f | 52.50647 |
| f | 43.14426 |
| m | 45.27999 |
| m | 41.95513 |
| m | 43.67319 |
| f | 58.09449 |
| m | 42.47022 |
| f | 55.91853 |
| m | 44.01857 |
| f | 43.25757 |
| m | 57.4945 |
| m | 44.54295 |
| f | 42.07507 |
| f | 46.80839 |
| m | 47.21837 |
| m | 40.30104 |
| f | 47.83167 |
| m | 50.56327 |
| f | 57.1638 |
| f | 43.69665 |
| f | 40.73333 |
| f | 50.98321 |
| f | 49.23148 |
| f | 48.01014 |
| m | 43.69635 |
| f | 46.56424 |
| f | 45.98231 |
| f | 53.03273 |
| m | 50.92119 |
| m | 55.55145 |
| m | 40.36097 |
| f | 55.32514 |
| f | 56.41127 |
| m | 51.95264 |
| f | 43.82211 |
| f | 40.41359 |
| f | 57.65748 |
| m | 40.59866 |
| f | 41.96207 |
| f | 49.08051 |
| m | 38.99055 |
| m | 54.74286 |
| f | 49.63484 |
| m | 47.71419 |
| m | 53.74624 |
| m | 41.75912 |
| f | 55.97797 |
| m | 44.82507 |
| f | 57.68229 |
| m | 45.85581 |
| m | 46.21859 |
| m | 53.61966 |
| f | 49.08471 |
| m | 41.36863 |
***Answer is 0.8974***
Solutions
orchestra answered 2 years agoRelated Solutions
Use "PLUC" data and the description for the dataset on the blackboard. Conduct a two sample...
Use "PLUC" data and the description for the dataset on the
blackboard. Conduct a two sample independent t test to test if the
population means of heights of male is higher than that of female.
Use R to calculate the p-value.
***Answer is 0.8974***
sex
hgt
m
45.68187
m
54.76593
m
43.80479
f
46.1765
m
57.60508
f
40.02826
f
52.50647
f
43.14426
m
45.27999
m
41.95513
m
43.67319
f
58.09449
m
42.47022
f
55.91853
m
44.01857
f
43.25757
m
57.4945...
Use "PLUC" data and the description for the dataset on the blackboard. Is there sufficient evidence...
Use "PLUC" data and the description for the dataset on the
blackboard. Is there sufficient evidence that the population mean
of "PLUC.pre" is different than that of "PLUC.post"?
Use R to find the p-value for the test.
***Answer is 8.739E-08***
PLUC.post
PLUC.pre
6.483496
8.078464
8.607279
8.539505
12.41932
13.32073
11.72048
8.640824
12.26601
9.979111
11.15877
8.878284
7.527066
10.6834
10.60626
8.728163
6.276827
10.68463
10.1099
11.35035
6.520483
12.71441
11.91813
8.892171
10.66304
8.830107
9.777328
10.50259
9.220989
5.537055
11.79612
8.710783
11.11839
12.75601
8.965028
6.423624
11.48719
3.823811...
The dataset Golfers2008.xlsx saved in Datasets in Blackboard contains data on the top 40 golfers in...
The dataset Golfers2008.xlsx saved in Datasets in
Blackboard contains data on the top 40 golfers in 2008.
This was the year when Tiger Woods won the U.S. Open in June and
then had year-ending surgery.
Using all the explanatory variables, run a regression predicting
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Determine the best fit model by removing any insignificant
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Download the dataset CARS1 from BlackBoard. a. Do not worry about outliers. Assume the data is...
Download the dataset CARS1 from BlackBoard. a. Do not worry
about outliers. Assume the data is correct and any outliers will
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c. Test for correlation (correlation coefficient) d. Regress weight
(column 2) against gas mileage in the city (column 1). Make sure
you make gas mileage the dependent (Y) variable. e. Determine and
fully explain R2 MPG City Weight 19 3545 23 2795 23 2600 19 3515 23
3245...
Pick any set of data from the textbook or your own data. Conduct a two sample...
Pick any set of data from the textbook or your own data. Conduct
a two sample T-test. Explain in the discussion question: Your
source of data Your null hypothesis Whether or not you rejected the
null hypothesis (and include the P value) How this information
might be relevant to a decision maker. Attach the Excel file
containing the data source (but be sure everything we need to know
about your executive summary is in the body of the discussion
forum,...
Use the paired dataset given in the below table to conduct a simple regression analysis as...
Use the paired dataset given in the below table to conduct a
simple regression analysis as follows:
(10 pts) Using these 4 paired data points, fill up the table
calculating all of the terms such as (x2, x*y) used in
the formulas of this question. Fill up the other column titles on
your own and make the calculations. If needed add coloumns. (the
table should be written in your answer paper)
xi
yi
xi2
xi*yi
1
2
32
2
1...
For the following sequence of sample nominal data (with two categories), conduct a runs test for...
For the following sequence of sample nominal data (with two
categories), conduct a runs test for randomness, using α =
0.05.
Y N Y N N Y N Y Y Y N Y N Y N Y Y Y N Y N Y N N Y Y Y Y N Y N Y
N Y Y
Identify the value of the TEST STATISTIC used in this runs
test.
For the following sequence of sample nominal data (with two categories), conduct a runs test for...
For the following sequence of sample nominal data (with two
categories), conduct a runs test for randomness, using α = 0.05. P
P Q Q P Q P P Q Q P Q P P
Identify the DECISION and CONCLUSION of this runs test.
Use the following data to conduct a one-sample t test ( with alpha= 0.05) to determine...
Use the following data to conduct a one-sample t test (
with alpha= 0.05) to determine if the score on a standardized test
( for scores that a are normally distributed) with a known
population mean of 100 is influenced by a new instructional
method:
95, 105, 110. 90, 120, 110, 100, 95, 105, 125, 80, 100, 120,
115, 115, 120, 120, 105.
data=(1,7,3,4,5,6,2,8,9,10,11,12,13,14,15,16,17,18,19,20) Suppose your dataset is a sample collected from some population with variance = 10. Use...
data=(1,7,3,4,5,6,2,8,9,10,11,12,13,14,15,16,17,18,19,20)
Suppose your dataset is a sample collected from some population
with variance = 10. Use R to solve the problems
(b) (2pts) Determine a (96)% confidence interval for the
population mean.
(d) (3pts) Conduct a (92)% confidence level hypothesis test to
test if the population mean is larger than 5 using Pvalue.
(g) (2pts) Determine the probability of Type II Error for the
test in (d) if the population mean is actually 10.
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