Ten pairs of variablesandwere collected to determine if there is sufficient evidence to indicate thatandhave a negative linear relationship at the 5% significance level. The regression analysis results in 1=1.1909,s=3.0018,SSxy=370.9andpvalue=0.0000607.

a) What is the the null and alternative hypotheses to test whether the data provide sufficient evidence to indicate that x and y have a negative linear relationship.

b) Make an appropriate conclusion for your analysis

c) Construct a 95% confidence interval for the slope parameter. Interpret your result.