Question

Consider the accompanying data on x = research and development expenditure (thousands of dollars) and y = growth rate (% per year) for eight different industries.
a. Would a simple linear regression model provide useful information for predicting growth rate from research and development expenditure? Use a .05 level of significance.
b. Use a 90% confidence interval to estimate the average change in growth rate associated with a $1000 increase in expenditure. Interpret the resulting interval.


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  • CreatedSeptember 19, 2015
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