Note: Use 80 members. For part b go from x (3) to x (79).

7. A fitness gym has measured the percentage of fat on 86 of its members. (a) At least what percent of its members have fat percentages between the smallest and largest of the percentages measured on the 86 members in the sample, with 95% certainty? With 90% certainty? (b) At least what percent of its members have fat percentage between X(2) and X (85) with 95% certainty? With 90% certainty? 7. A fitness gym has measured the percentage of fat on 86 of its members. (a) At least what percent of its members have fat percentages between the smallest and largest of the percentages measured on the 86 members in the sample, with 95% certainty? With 90% certainty? (b) At least what percent of its members have fat percentage between X(2) and X (85) with 95% certainty? With 90% certainty