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Describe the assumptions of normality and homogeneity of variance. When these assumptions are violated, what are your options? Are there cases in which the assumptions may technically be violated, yet have no impact on your intended analyses? Explain
Q-mart is interested in comparing its male and female customers. Q-mart would like to know if the amount of money spent by its female charge customers differs, on average, from the amount spent by its male charge customers. To answer this question, a..
What is the standard error of his prediction
Develop a scatter diagram for these data. Try to approximate the relationship between x and y by drawing a straight line through the data.
Hypothesis test in the research hypothesis is specific about the difference but with no direction specified for the difference is a (n)?
Draw all of Venn Diagrams - Using circle Venn Diagrams and What are all of the subsets of U?
Calculate the sample size needed given these factors
What is the probability that at least one of the flights will be late and why the binomial model is not appropriate for finding the probability that at least one flight will be late.
A random sample of [n=64 children] of working mothers showed that they were absent from school a sample average of [x=5.3] days per term, with a standard deviation [s=1.8 days]. Provide a 96% confidence interval for the average number of days absent..
The average pay per hour for an employee in the packaging and shipping department of XYZ Corporation is $12.88 with a standard deviation of $0.95. Assume normal distribution applies
Many organizations are doing surveys to determine the satisfaction of their customers. Attitudes toward various aspects of campus life were the subject of one such study conducted at Purdue University.
Consider an experiment that consists of 2 rolls of a balanced die. If X is the number of 4s and Y is the number of os obtained in the 2 rolls of the die, find (a) the joint probability distribution of A and V; (b) P[(X, Y) € A], where A is the region..
In a poll, 51% of he people polled answered yes to the question "are you in favor of the death penalty of a person convicted of murder?" the margin of error in he pole waa 2% and the estimate was made with 95% confidence. At least how many people wer..
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