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The test scores for selected samples of sociology students who took the course from three different instructors are shown below.
Instructor A Instructor B Instructor C
83 90 85
60 55 90
80 84 90
85 91 95
71 85 80
At a = 0.05, test to see if there is a significant difference among the averages of the three groups.
You have just received an inheritance of $10,000 and you decide that you should invest the money rather than blow it on frivolous items. You have decided that you will invest the money in one of two types of mutual funds. The first type that you are ..
a. Estimate the number of games in the sample that the Colonials win by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
Find the equation of the regression line for the given data. What is the predicted value of Y when X = -2? What is the predicted value of Y and find the correlation coefficient between X and Y. Is there a weak or strong, positive or negative corr..
Create a histograms for variable height-pull up Graph
How are the degrees of freedom for the chi-square hypothesis tests different from those of most other hypothesis tests? In most previous hypothesis tests, the degrees of freedom have been based on sample size.
Calculate correlations among the portfolio, SH, and RWM and do you believe the relationships identified are stable and can thus be used going forward?
Lakeshia sells 3,600 high end folding therapy
The AMS technical services department has embarked on a quality improvement effort. Its first project relates to main- taining the target upload speed for its Internet service sub- scribers. Upload speeds are measured on a standard scale
A sample survey funded by the National Science Foundation asked a random sample of American adults about biological evolution. One question asked survey participants to answer "True", "False" or "Not sure" to the statement "Human beings, as we ..
Why does a p-value provide a true measure of statistical significance? Try to relate your answer to previously covered concepts - example continuous probability distributions.
At a recent meeting of educational researchers comparison were made between the type of college freshmen attend and the numbers who drop out. A random sample of freshmen show the following results: (keep two decimals in calculating expected fre..
3. hypothesis testing 15 marks should the cbc hire celebrities for their movies? to answer this question run a
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