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A recent study found that if a person chewed gum, the average number of sticks of gum he or she chewed daily was 8. To test the claim, a researcher selected a random sample of 25 gum chewers and found the mean number of sticks chewed per day was 9. The standard deviation of the sample is 1. At a =.02 , is the number of sticks of gum a person chews per day actually greater than 8? Use the traditional method of hypothesis testing.
About 72% of dog owners buy holiday presents for their dogs. Suppose n = 4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog holiday presents.
Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..
Which of the following models are appropriate to forecast a time series whose amplitude increases over time?
A recent article in Business Week listed the "Best Small Companies." We are interested in the current results of the companies' sales and earnings.
Two percent of the parts from a production process are defective. A sample of five parts from the production process is selected. What is the probability that the sample contains exactly two defective parts?
The management of a chain of fast food restaurants wants to investigate the relationship between the daily sales volume (in dollars) of a company restaurant and the number of competitor restaurants within a 1 mile radius. The following data have b..
Cconducting in which you would analyze your results using a factorial ANOVA. Use the appropriate notation to describe the ANOVA you would conduct. Write your response in a Microsoft Word documen.
Is there a more efficient way to design the experiment to answer the same question? In other words, is there a better way to make use of this data?
A large population of overdue bills has balances that fallow a normal curve. When we take a sample of 100 of these the average is $500 and the standard deviation is $100.
The January 17, 1994 issue of Time magazine reported that 58% of adult Americans said yes to the question "If you or your spouse were pregnant, would you want the unborn child tested for genetic defects?"
Define mixed method research and describe its strengths. Provide an example of when it is appropriate to apply mixed method research in the human services field. Summarize how scientifically sound research supports the function of a human services..
Where should the warranty limits be set so that only 10 percent of the HDTVs need repairs at the manufacturer's expense?
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