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A regression model to predict Y, the state-by-state 2005 burglary crime rate per 100,000 people, used the following four state predictors: X1 = median age in 2005, X2 = number of 2005 bank- ruptcies per 1,000 people, X3= 2004 federal expenditures per capita, and X4= 2005 high school graduation percentage. (a) Write the fitted regression equation. (b) Interpret each coefficient.
(c) Would the intercept seem to have meaning in this regression? (d) Make a prediction for Burglary when X1 = 35 years, X2 = 7.0 bankruptcies per 1,000, X3 = $6,000, and X4= 80 percent. Burglary
a random sample of medical files is used to estimate the proportion p of all people who have blood type b.a if you have
Calculate the mean of the 20 samples and draw a histogram showing the 20 sample means and describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).
it is generally believed that electrical problems affect about 14 of new cars. an automobile mechanic conducts
Find the expected frequency to test the claim that walking and low, moderate, and high blood pressure are not related. Round to the nearest tenth if necessary.
question suppose you have an investment a whose return is normally distributed with mean 8 and standard deviation of
Suppose the regression equation that has been used to estimate the value of existing homes is as follows; Interpret the meaning of the slopes of this equation.
the 2002 new york city housing and vacancy survey showed a total of 59324 rent controlled housing units and 236263
In 1984 the country of Morocco in an attempt to determine the average amount of time that tourists spend in that country on a visit tried two different sampling procedures.
It is impossible to obtain a standard error less than 2 for any sized sample.
a may 2007 gallup poll found that only 11 of a random sample of 1003 adults approved of attempts to clone a human.find
the probability that a student will pass an exam is 0.8. if we consider a group of 20 students what is the probability
sotex productions is doing a spring catalog shoot for a big clothing retailer. they want to show 3 couples boy and girl
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