Estimate Std. Error (Intercept) 15.7002 9.5480 1.9086 0.8135

a) What is the value of the test statistic for the slope estimate?(2 marks)

b) At the 5% significance level, is the explanatory variablexstatistically significant in predicting the response variabley?(4 marks)

Q6. The computer output displays the coefficients estimates for a least-squares regression model for a data set of 20 observations. Coefficients : Estimate Std. Error (Intercept) 15. 7002 9. 5480 X 1. 9086 0. 8135 a) What is the value of the test statistic for the slope estimate? (2 marks) b) At the 5% significance level, is the explanatory variable x statistically significant in predicting the response variable y? (4 marks)