At the alpha equals 0.01 level of significance, is there sufficient evidence to conclude a positive linear relationship between these variables for all mobile phones, Y? So pause this video and see if you can have a go at it. Well, in order to do this hypothesis test, we have to say, well, assuming the null hypothesis is true, assuming this is the actual slope of the population regression line, I guess you could think about it, what is the probability of us getting this result right over here? And what we can do is use this information and our estimate of the sampling distribution of the sample regression line slope, and we can come up with a t-statistic. And for this situation, where our alternative hypothesis is that our true population regression slope is greater than zero, our p-value can be viewed as the probability of getting a t-statistic greater than or equal to this. So getting a t-statistic greater than or equal to 2.999. Now, you could be tempted to say, hey, look, there's this column that gives us a p-value.