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Calculate the mean Days in Inventory for the cars in the sample.
Mean days = 19.96
Compare that to the median and the mode.
Median =20 Mode =2
Construct a scatterplot of the relationship between the 2 variables. Plot the regression line on this graph
Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distributed with a mean of 4.5 inches and a standard deviation of 0.3 inches.
The U.S. trade deficit with Canada (billions of dollars) from 2000 through 2007 is reported as shown in the table. Using exponential smoothing and the smoothing constant a = 0.7, what deficit would have been forecast for 2008? Source: World Almanac..
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
here is a simple probability model for multiple-choice tests. suppose that each student has probability p of correctly
Statistics for investing (3.1) Joe's retirement plan invests in stocks through an "index fund" that follows the behavior of the stock market as a whole.
Suppose that 35% of the students at a university favor the semester system, 60% favor the quarter system, and 5% have no preference.
The house of representatives has a very controversial bill that will be going to vote. To help formulate his strategy on how to get the bill passed, the chairman of the committee that has been studying the bill wishes to know if there is a divisio..
Find the probability that on any given day the car will get more than 26 miles per gallon when driven in the city.
Two of the summary measures from the list mean, median, range, and interquartile range are resistant, while the other two are not. Explain which two are resistant and which two are not.
We already know that the marginal distribution of X is Unif(0, L). Check that marginalizing out Y from the joint PDF agrees.
a bridge hand consisting of 13 cards is selected at random from an ordinary deck of cards. let h d c and s be the
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