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A research would like to analyze effects of humidity on eating behavior. It is known that laboratory rats normally eat an average of µ = 21 grams of food each day. Research chooses the random sample of n = 16 rats and places them in controlled atmosphere room in which relative humidity is maintained at 90%. Daily food consumption scores for rats are as follows:
14, 18, 21, 15, 18, 18, 21, 1816, 20, 17, 19, 20, 17, 17, 19
a. Can researcher conclude that humidity has significant effect on eating behavior? Use a two-tail test with α = .05.
b. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
How can you or your department decide whether or not the variation is important? How could using a mean difference test help?
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
The manufacturer would like to establish Inventory levels such that there is only a 5% chance of running out of stock. Where the Manufacturer should set the inventory levels?
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
How close is the calculated value to your experimental value?
Dotties Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers.
A soft drink company has recently received customer complaints about its one-liter-sized soft drink products. Customers have been claiming that the one-liter-sized products contain less than one liter of soft drink.
He reviews the last eight months at dealership B and finds the standard deviation of the eight monthly sales to be 22.95. Using the .01 significance level does the analyst find evidence that the boast of dealership A is correct?
Determine estimated average starting salary for school with average GMAT of 600 points?
Several factors influence the value obtained for a t statistic. Some factors affect the numerator of the t statistic and others influence the size of estimated standard error in the denominator.
The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 5 percent of the products to weight more than 5.10 ounces.
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