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a) A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you.
b) How would that compare to a drug that had a p-value of .087?
Raccoons are identified by gender and then weighed from three different neighborhoods. Using a 0.05 significance level what can you conclude from the following Two-Way ANOVA results?
The following frequency table lists the sales of an item and the number of times it has occurred. It was obtained from historical records.
A randomized controlled trial was designed to compare the effectiveness of splinting against surgery in the treatment of carpal tunnel syndrome.
Is there a difference in the number of points students earned on their educational statistics pretests and posttests?
Determine r.m.s. error for regression prediction of height at 18 from height at 6.
The dimension is supposed to be 224 mm and the variability of the manufacturing process is unknown. Is there evidence that the mean dimension is not 224 mm?
What should the cut-off score be for the interviews? (Round to nearest whole number).
Construct the payoff table for this decision situation. Compute the expected value of each alternative amount of milk that could be stocked, and select the best decision.
Compute the mean, standard deviation, median, and standard error for each group.
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Determine regression line for predicting January temperature from latitude.
You are asked to estimate the chance that the sum will be positive.
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