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Decreases in body temperature (degrees Fahrenheit)
Group 1 (aspirin)
0.95
1.48
1.33
1.28
Group 2 (ibuprofen)
0.39
0.44
1.31
2.48
1.39
Group 3 (acetaminophen)
0.19
1.02
0.07
0.01
0.62
-0.39
This trial evaluated the fever reducing effects of three substances. Study subjects were adults seen in an emergency room with diagnosis of flu with body temperatures between 100.0 degrees F to 100.9 degree F. The three treatments aspirin, ibuprofen, and acetaminophen were assigned randomly to study subjects. Body temperatures were reevaluated 2 hours after administration of treatments. Displays the above data with side-by-side box plots and calculate the mean and standard deviation of each group and describe what you find then produce an ANOVA for the problem. Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Display the above data with side-by-side box plots.
Now he wants to know if there is a difference between the three formats. Is there?
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
We want to estimate the population mean within 5, with a 99% confidence level. The population std dev is estimated to be 15. How large is the required sample size?
Which of the following would produce a new confidence interval with smaller width based on these same data and produce a new confidence interval
Evaluate the standard deviation - use the conservative value for the degrees of freedom, Assume the two groups are independent and the data are approximately Normal. Let µ 1 and µ 2 represent the mean heart rates we would observe for the entire po..
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
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Basic Statistics problem
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The analysis of covariance (ANCOVA) is generally useful for _______________
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