Erythropoietin (epo) is a banned drug used by athletes to increase the oxygen-carrying capacity of their blood. new tests for epo were first introduced prior to the 2000 olympic games held in sydney, australia. chance (spring 2004) reported that of a sample of 830 world-class athletes, 159 did not compete in the 1999 world championships (a year prior to the new epo test). similarly, 133 of 82: 5 potential athletes did not compete in the 2000 olympic games. was the new test effective in deterring an athlete's participation in the 2000 olympics? if so, then the proportion of nonparticipating athletes in 2000 will be greater than the proportion of nonparticipating athletes in 1999, use a 98% confidence interval to compare the two proportions and make the proper conclusion.

i have no clue at all sorry

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.