7. Ben has a theory that the older the movie, the fewer people know about it. He takes a random sample of ve movies and notes how many years-old they are and the percentage of movie watching people who are familiar with them. The dependent variable (age of movie) has a mean of 45 years with a variance of 950 years. The independent variable (percentage of familiarity) has a mean of 55 with a variance of 475. The covariance between the variables is -287.5, the correlation between the variables is -0.428, and the standard error of the estimate is 22.745. (Please note: the association is negative and I gave you the variances, not the standard deviations.) The regression equation is: Familiarity = 68.6 0.3(Age) Please build a 99% condence interval for the slope. Please note: The data is the same, but I am now asking for a 99% condence interval