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Compute the following .r = correlation between x and y = - 0.7 = mean of the values of x = 50.25 = mean of the values of y = 31.77 = standard deviation of the values of x = 15.85 = standard deviation of the values of y = 1.76 The slope of the least-squares line is ????
Should Katie conduct a between-subject ANOVA or a within-subject ANOVA? Describe your answer.
You take a random sample around town and calculate a p-value for your hypothesis test of 0.0913. What is the appropriate conclusion? Conclude at the 5% level of significance.
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
In a recent year Barry Bonds hit 73 home runs in the 153 games he played. Assume that his home run production stayed at that level the following season.
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
In a randomized clinical trial of timolol vs. placebo in patients surviving acute myocardial infarction, the total deaths at an average of 24 months after treatment were found to be 65 out of 720 in the Timolol group and 112 out of 860 in the plac..
A group of investors wants to develop a chain of fast food cafés. In determining potential costs for each facility, they must consider, among other costs, the average monthly cost of electricity.
Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
You are the principal of a large urban high school and wish to do a parent survey to determine how parents feel about same-sex classes.
A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.
Illustrate what was the lowest score earned on the exam. Explain how many students scored within 3 standard deviations of the mean.
The mean television viewing time for teens is 3 hours per day. Assume the population mean is 3 and the population standard deviation is known to be 1.2 hours.
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