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Dr. Alexander is interested in studying the effects of exercise on mood. Participants included 120 children, half assigned to swim 30 minutes per day and the other half assigned to read 30 minutes per day. After 3 weeks, they administered a test of positive mood. If this study involved a repeated measures design (within subjects) comparing conditions with the same number of participants, how many participants would be in each group?
If random samples of size of 75 is selected, the standard error of the proportions of student in the sample, who are minority students is
Use Bayes' rule to find conditional probability which Julianne is carrier, given that she and Jason have one child who doesn't have CF.
When studying the simultaneous responses to two categorical questions, we should set up a:
Hanna Properties specializes in custom-home resales in the Equestrian Estates, an exclusive subdivision in Phoenix, Arizona. A random sample of nine custom homes currently listed for sale provided the following information on size and price.
He is sorry but there is a 99.9% (1-0.001) chance that you have HIV. Is he correct? What is the actual probability that you are HIV positive?
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
Determine the proportion of variation in grade that can be explained by the linear correlation between the grade and the number of credit hours earned at the same time of taking the course.
Describe a study you might design that could use the Chi Square statistic. What are the variables? What are the null and alternative hypotheses? Why would the Chi Square test be appropriate for this design?
Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
An order for 5 pizzas has just been place. What is the minimum number of pizzas that must be made in order to be at least 99% sure that there will be 5 that are edible?
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
What is the role of probability concepts in business decision making? Define probability concepts.
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