Fill in the blank: For these data, 1999 per capita incomes that are less than the mean of the 1999 per capita incomes tend to be paired with 1980 per capita incomes that are _____ the mean of the 1980 per capita incomes. Choose onegreater thanless than 2. According to the regression equation, for an increase of one thousand dollars in 1980 per capita income, there is a corresponding increase of how many thousand dollars in 1999 per capita income? 3. What was the observed 1999 per capita income (in thousands of dollars) when the 1980 per capita income was 7.6 thousand dollars? 4. From the regression equation, what is the predicted 1999 per capita income (in thousands of dollars) when the 1980 per capita income is 7.6 thousand dollars? (Round your answer to at least one decimal place.)
Fill in the blank: For these data, 1999 per capita incomes that are less than the mean of the 1999 per capita incomes tend to be paired with 1980 per capita incomes that are _____ the mean of the 1980 per capita incomes. Choose onegreater thanless than 2. According to the regression equation, for an increase of one thousand dollars in 1980 per capita income, there is a corresponding increase of how many thousand dollars in 1999 per capita income? 3. What was the observed 1999 per capita income (in thousands of dollars) when the 1980 per capita income was 7.6 thousand dollars? 4. From the regression equation, what is the predicted 1999 per capita income (in thousands of dollars) when the 1980 per capita income is 7.6 thousand dollars? (Round your answer to at least one decimal place.)
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 82E
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In ongoing economic analyses, the U.S. federal government compares per capita incomes not only among different states but also for the same state at different times. Typically, what the federal government finds is that "poor" states tend to stay poor and "wealthy" states tend to stay wealthy.
per capita income for a state (denoted by
) from its
per capita income (denoted by
)? The following bivariate data give the per capita income (in thousands of dollars) for a sample of fourteen states in the years
and
(source: U.S. Bureau of Economic Analysis, Survey of Current Business, May
). The data are plotted in the scatter plot in Figure 1, and the least-squares regression line is drawn. The equation for this line is
.
Based on the above information, answer the following:
Would we have been able to predict the
1999
y
1980
x
1980
1999
2000
=y+0.382.75x
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