Please help me work out these threeSimple Linear Regression questions. Thanks.

1.

Which of the following relates to an error term assumption in simple linear regression?

A.The values of the independent variable X are assumed to be random.

BThe residuals are uncorrelated with each other in successive observations.

CThe sum of the error terms is assumed to be minimised.

DThe values of X and Y will equal 1.

2.

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 = -6.14 +0.63 X Error sum of squares:329.1 Sum of squares of X: 961.3 Determine the upper limit for the90% confidence interval for the slope correct totwo decimal places.

3.

df	SS
Regression	1	338.46
Error	48	99.54
Total	49

The above ANOVA output is part of the printout relating truck weight to fuel consumption. Calculate the coefficient of determination as a percentage correct to two decimal places.