Sal knows that parties of people on average spend 75 minutes at their restaurant. They wonder if this average is significantly different on the weekends. They find the average time spent by the 30 parties which dined there this weekend was 82 minutes with an SD of 17 minutes. Assume an alpha of .05. 1) The lower end of the 95% confidence interval is ______ and the higher end of the 95% confidence interval is _______