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A grocery store is sponsoring a sales promotion where the cashiers give away one of the letters: a, e, l, s, u, v for each purchase. if the customer collects all six, he or she gets $20 worth of groceries free. What is the expected number of trips to a store a customer needs to make?
Use the Emperical Rule to find what two values 68% of the data will fall between for a data set with a mean of 219 and standard deviation of 20.
sam wanted to test a claim about the mean of a population whose standard deviation was unknown. he picked a simple
This set of height measurements are recorded in centimeters. Answer the following questions using the Histogram Applet. Is 1.7cm a Plausible mean value? Explain.
given the following table of payoffs use sensitivity analysis to determine at what probability or more you would select
Using realistic numbers for values of degrees of freedom, sample size, F-ratio, confidence interval and post hoc results; report hypothetical results in a few sentences using APA format.
a bookshelf contains 20 textbooks for different subjects. among those 10 of them are used ones and 10 of them are brand
Suppose that by the end of 2009, that percentage was 85%. If a sample of 10 U.S. adults is selected, what is the probability
question suppose we wished to know if model a or b was safer based on the results of the safety tests described in
Compute the 3.9% confidence interval on the mean. Which confidence interval is more practical and useful in a business situation? Why?
The value of the z-score that is obtained for a hypothesis test is influenced by several factors. Some factors influence the size of the numerator of the z -score and other factors influence the size of the standard error in the denominator.
question a bag contains a total of 20 batteries of which six are defective. selecting two at random without replacement
To guarantee that cans of soda are properly filled, some cans are sampled and the amounts measured. The overall average for the samples is 12 ounces.
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