Simple linear regression analysis was applied between sales (y in $1,000) and advertising (x in $100), and the following regression function was obtained for a dataset with n=17n=17: y^=12+1.8xy^=12+1.8x. In testing the null hypothesis that the regression slope is zero, the t statistic was calculated to be t=6.71t=6.71. Thep-value is (????) (Select less than or greater than.) 0.05,

so we reject / fail to reject (????)(Select reject or fail to reject.) the null hypothesis, and the conclusion of the test at the 5% level of significance is that the regression slope (????) is / is not (Select is or is not.) zero.