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Construct a Scatterplot of the raw data. Then, run the Correlation/Regression program.
Costs of Television: Listed below are prices (in dollars) and quality rating scores of rear-projection televisions. All of the televisions have screen sizes of 55 or 56 inches. Is there sufficient evidence to conclude that there is a linear correlation between the price and the quality rating score of rear-projection televisions? Does it appear that as the price increases, the quality score also increases? Do the results suggest that as you pay more, you get better quality?
Price 2300 1800 2500 2700 2000 1700 1500 2700
Quality 74 73 70 66 63 62 52 68
Identify the correlation coefficient: r = __________
Identify the CV at alpha = 0.05: __________
Is there significant linear correlation?: ________
How do you know? ____________________________
Find the relative risk for moderate beer drinkers as compared to nondrinkers, finds the 95% confidence interval
(A) What sums are needed to calculate a correlation coefficient? (B) What are the two ways of testing a correlation coefficient for significance?
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
A process follows the binomial distribution with n = 8 and p = .3. Find
"If you took 40 employees at random from the corporation, there is a pretty good chance the average number of days absent would be 12 or more. That's what happened to us - chance variation." Is this a good defense? Justify your answer.
The height and diameter of 31 trees of a certain species were measured, the trees were cut down, and the volume of usable lumber was determined. Find the explanatory variable(s) in this study are
Illustrate out the term control chart? Critically discuss the grand mean, the UCL and the LCL of a control chart for the mean?
Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to i..
Suppose you want to estimate the sample size for a multiple correlation analysis. There are five predictors in your study.
The probability that more than 6 planes arrive in the next minute is _____.
John, a medical practitioner at a private medical facility, is discussing the problem that one of his patients, Tom, says he has been having with the medication that the doctor has prescribed.
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
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