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Refer to Real Estate data, which report information on homes sold in the Denver, Colorado, area during the last year.
a. The mean selling price (in $ thousands) of the homes was computed earlier to be $221.10, with a standard deviation of $47.11. Use the normal distribution to estimate the percent of homes selling for more than $280.0. Compare this to the actual results. Does the normal distribution yield a good approximation of the actual results?
b. The mean distance of from the center of the city is 14.629 miles with a standard deviation of 4.874 miles. Use the normal distribution to estimate the number of homes 18 or more miles but less than 22 miles from the center of the city. Compare this to the actual results. Does the normal distribution yield a good approximation of the actual results?
Five test vehicles of each kind were crashed, with results given below. Research question: Are mean crash damages the same for these 3 vehicles?
Determine the mean for list of numbers. 6, 5, 9, 4, 14, 9 (Round to the nearest tenth)
Make for more scatter plots comparing GDP growth 1970-2000 to corruption, political rights, rule of law, and socio-political instability
Consider the following stemplot. The mean of the data represented in this stemplot ?
Modify above problem (Problem 8th) so that each hardware vendor now demands seventy-five (75) units. Any units available from the vendors that are not shipped cost nothing.)
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
In what sense is this business problem? A societal problem? An individual problem?
Use the trend equation to calculate the points for 2003 and 2005. Plot them on the graph and draw the regression line.
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
Find the standard normal area for each of the following: (Round the answers to 4 decimal places.)
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
Standard deviations for first- and second-time and confidence interval
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