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Twelve subjects were each given two ?avors of ice cream to taste and then were asked whether they liked them. Two of the subjects liked the ?rst ?avor and nine of them liked the second ?avor. Is it valid to use the Chi Square test to determine whether this difference in proportions is signi?cant? Why or why not?
Compute the standardized slopes for SES and English ability; interpret them, and specify what additional information is learned from the standardized slopes that cannot be learned from the unstandardized slopes.
Does the data suggest that true average maximum lean angle for older females is more than 10 degrees smaller than it is for younger females? State and test the relevant hypotheses at significance level .10 by obtaining a P-value.
Use the sample data to construct a 95% confidence interval estimate of the difference between the two rates of lost baggage. Does there appear to be a difference?
He asks you to develop a proposal for the study and submit it to him. Develop the management-research question hierarchy that will help you to develop a specific proposal.
In a random sample of 12 adults from the U.S., the mean waste recycled per person per day was 1.4 pounds with a sample standard deviation of .3 pounds. Assume that the distribution of x = waste recycled per person per day is normal
Assume that the results would be similar to those in your test-that is, 65% of the subjects had better UVA and UVB protection with your product. Perform the significance test and summarize the results.
In which of the following games of chance would you be willing to assume independence of X and Y in making a probability model? Explain your answer in each case.
Calculate correlation coefficient for data below. Compute the equation for regression line if n=7, Ex=69, Ey=528 Exy=4754 and Ex^2=825
a microchip company has two machines that produce the chips. machine i produces 55 of the chips but 5 of its chips are
Do the data provide sufficient evidence to indicate that x and y are negatively linearly related?- Construct a 95% confidence interval for β1.
What is the probability that a cardiac patient who regularly participates in sports has a maximum oxygen uptake of at least 20 ml/kg?
a car manufacturer claims that the miles per gallon for a certain model has a mean equal to 40.5 miles with a standard
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