Advertisers fear that users of DVRs will fast forward past commercials when they watch a recorded program. A leading British pay television company told its advertisers that this effect might be offset because DVR users watch more TV. A sample of 15 DVR users showed a daily mean screen time of 2 hours and 29 minutes with a standard deviation of 15 minutes, compared with a daily mean of 2 hours and 6 minutes with a standard deviation of 12 minutes for a sample of 15 non-DVR users. Construct a 99 percent confidence interval for the difference in mean TV watching (Round your answer to 2 decimal places.) The 99% confidence interval is from _______ to _________