Question 5 (1 point) 12 Two competing toothpaste brands both claim to produce the best toothpaste for whitening. A dentist randomly samples 48 patients that use Brand A (Group 1) and finds 30 of them are satisfied with the Whitening results of the toothpaste. She then randomly samples 45 patients that use Brand B (Group 2) and 15 finds 33 of them are satisfied with the whitening results of the toothpaste. Construct a 99% confidence interval for the difference in proportions and use it to decide if there is a significant difference in the satisfaction level of patients Enter the confidence interval - round to 3 decimal places.