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A population has μ=100 and σ=20. If you select a single score from this population, on the average, how close would it be to the population mean? Explain your answer.
A group of young businesswomen wish to open a high fashion boutique in a vacant store, but only if the average income of households in the area is at least $25,00.A random sample of 9 households showed the following results:
From the fourth quarter of 1997 to the first quarter of 1998, revenues declined. What happened on a seasonally adjusted basis? d)Compute the forecast for the second quarter of 2002. e)Find the regression equation to predict the long term trend in th..
Which depressed this tobacco company stock.) Describe the shape, center, and spread of the data after you omit the outlier. (c) The data appear in time order readi.
If the limits of the confidence interval of the difference between the means of two normally distributed populations were 3.5 and 5.5 at the 95% confidence level, then we can conclude that we are 95% certain that there is a significant difference ..
Test this problem at 99% confidence and provide conclusion. Would the problem have a similar conclusion if we knew the population standard deviation was $40,000? Why?
1.ten years ago a study at a large midwestern university found that 18 of the students at the university were very
a researcher wanted to investigate whether there was a difference in satisfaction ratings in an assisted living
A surgical technique is performed on eight patients. You are told that there is an 80% chance of success.
1.a radio station wants to know if residents in their area are in favor of a proposed tax increase. they invite
Is there solid evidence that the earth is getting warming? 69% of 731 male resondents answered yes and 70% of 770 female respondents answered yes.
Solve x^2 = -2 where x is a real number. Simplify your answer as much as possible.
The following data represent glucose blood levels(mg/100ml) after a 12 hour fast for random sample of 70 women: Employ 6 classes and make a frequency distribution table.
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