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Suppose you have some data gathered from a repeated experiment. If you want to make inferences about the data collected, and knowing that it is highly unlikely that a density function will provide a perfect representation of the data, how important is it to choose a correct probability density model? Should you be concerned about the likelihood that it is highly unlikely that a density function will provide a perfect representation of the data?
Is a sample of 25 papers large enough to provide a good estimate of the mean score of all 42,000 students on this exam problem? Justify your answer.
On the basis of the sample results, can we conclude that the mean annual lease rate is higher in Hong Kong than in Paris? Develop appropriate null and alternative hypotheses.
Differentiate between correlation and causation. What are the practical applications? How would it be used in the workplace?
Flu cases this past season in the Oshkosh school system were about 15 per week. For the entire state, the weekly average is 16 and the standard deviation, 2.35.
Suppose that data is recorded for equal period of "before"-"after" time. Use 1% level for risk. Given processed data, explain what John must do.
given the following data on the number of pints of ice cream sold at a local ice cream store for a 6-period time
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
If there are repeated independent trials and there are only two outcomes, what distribution should be used?
question 1based on a survey of 1000 adults by greenfield online and resported in a may 2009 usa today snapshot adults
To assess opinion of students at Ohio State University about campus safety, reporter for student newspaper interviews 15 students she meets walking on campus.
State the hypotheses. State the decision rule & sketch it. Find the sample proportions & z test statistic.
a bank has just made 200 car loans. the banks records indicate that about 7 of their customers make late payments on
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