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Suppose that for a set of numeric data, we have the following sample statistics:
x with bar on top equal 10
y with bar on top equal 89
sx = 36
sy = 123
r = 0.53
What is the estimated slope of the regression line, b1 to two decimal places? Hint: The formulas are given in the handouts in the "Ordinary Least Squares" discussion.
use linear regression to forecast values for periods 11 to 13 for the following time
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
A description of what information the effect size would tell you that the probability value would not, and your hypothetical results in a few sentences using correct APA format.
Give an example of how to use a t-test to analyze the data from the Table of Variables and list the grouping variable and continuous variable that you would include in the analysis
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
The following two variables: x = the number of police patrol cars cruising in a given neighborhood, and y = the number of burglaries committed in the neighborhood?
To demonstrate the effectiveness of the drug, a researcher selects a sample of n = 25 children diagnosed with the disorder and measure each child's attention span before and after taking the drug.
as the number of degrees of freedom for a t distribution increases the difference between the t distribution and the
Using a 1% level of significance, can the hypothesis that the distributions for the student's scores are identical be accepted?
to obtain information on the corrosion-resistance properties of a certain type of steel conduit 45 specimens are buried
Perfam is a manufacturer of fragrances for women. It currently sells two brands, one called Allure, which is sold to wholesalers for $40, and another called Beauty, which is sold to wholesalers for $20. It is considering adding a mid-priced brand c..
An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3).
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