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In a sample of 20 cups of coffee at the local coffee shop, the average temperature was 162.5 degrees with a standard deviation of 14.1 degrees. What would be the 95% confidence interval for the temperature of your cup of coffee?
Using the emperical rule solve the following problems for a distribution with a mean of 20 and a stardard diviation of 5. At least what percentage of the values will fall between 15 and 25.
a regression equation was fit to a set of data for which the correlation r between x and y was 0.6. which of the
A mortgage lender routinely places advertisements in a local newspaper. The advertisements are of three different types
The pipeline industry has approximately 100 companies, as compared to the motor carrier industry with more than 50,000. How do you account for this difference, given the fact that they both carry approximately the same volume of intercity ton mile..
Graph the least-squares line on your scatter diagram. Be sure to use the point (x, y) as one of the points on the line.
What is the margin of error of µ?? Interpret the results?
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
Money surveyed mutual funds as a good investment instrument. Suppose that the annual average percentage return from mutual funds is a normally distributed.
what type of variable is the mode best for
Assume normality. Find a 95% confidence interval for the population mean speed of pitches in the first inning of Major League baseball games.
(a) As a class, describe the business pressures on your university. Each group will then create an online group for studying one of these business pressures, and how your university uses IT to respond to this pressure. Each member of the group mu..
Your assignment this week is to describe structural equation modeling in which you include: (a) a comparison of the first and second generation models of structural equation modeling and their related major assumptions, (b) how regression analysis..
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