1.

The Maroochy Chamber of Commerce is interested in determining the relationship between the number of fine days each year and the number of interstate and overseas tourists visiting the Sunshine Coast each year, measured in thousands. Using annual data from 1993 to 2005 (inclusive), the following model was estimated: Y = -4.76 +1.02 X

Error sum ofsquares:472.4Sum of squares of X: 939.8

Determine thelower limit for the90% confidence interval for the slope correct totwo decimal places.

2.

An economist estimated a linear relationship between the daily consumption of electricity for a region in megawatt-hours and the maximum daily temperature in degrees Celsius using daily data for December 2004 and January and February 2005 (n = 90). If the sums of squares of regression and the standard error of the estimate were found to be990.92 and 3.05, respectively, determine the coefficient of determination. Answer as percentage correct totwo decimal places.