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Contrast the two message techniques using Wilcoxon signed-rank test.
A sample of 10 persons is used to measure the effectiveness of two massage techniques. The effectiveness of the techniques is measured by the number of days that pass by before the subjects feel the need for another massage session. Every person is exposed to both techniques and the number of days before he or she feels the need for another massage session is recorded. The following table represents the data provided by sample.
Subject
Technique 1
Technique 2
1 2 3 4 5 6 7 8 9 10
15 13 21 19 10 17 18 10 15 19
10 11 11 21 10 15 20 17 12 16
Use = .05 and the Wilcoxon signed-rank test to see whether there is a significant difference between the two massage techniques.
The following data represent the cost of electricity for the period of July 2008 for a random sample of 50 one-bedroom apartments in a large city.
The hypothesis that the samples came from identical populations cannot be rejected, the T value is 16.5 greater that the lower limit.
Utilizing the 5% level of significance as there was a significant change in cholesterol level. Their total cholesterol levels before also after the diet.
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
Compute descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Compute the value of beta for each stock. Which of these stocks would you expect to perform best in an up market? Which..
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
The average score on the stat midterm was 75 points with a standard deviation of 5 points, and Gregor's z-score was -2. How many points did he score.
What is the probability that a particular driver had exactly two speeding violations?
What should the cut-off score be for the interviews? (Round to nearest whole number).
Construct a scatter plot of P-RFM and P-HELM. If drawing the plot by hand, use graph paper to ensure accuracy.
Write a one-page report to Ms. Gupta presenting your conclusions regarding the market performance of Brand 1.
a) Find the marginal density of Y. b) Find E(X) HINT: What is E (X|Y=y) ?
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