In 2007, an interval estimate revealed that the average amount of money spent on movie rentals across the US was reported to be $32,955 and $36,143 per week. This interval estimate was based on a sample of 45 retailers. The variance of the money spent was determined from previous studies to be $47,761,921 squared. What level of condence can be attributed to this interval estimate? State your answer as a percentage, correct to the nearest whole number