The number of people jumping on one leg is 300×8%=24, and the number of people kicking shuttlecock is 300×25%=75.
(2) It is known from (1) that the total number of participants in this competition is 300; The degree of the central angle of the sector where the "standing long jump" is located in the sector statistical chart is 360× 8% =108;
(3) No, because the pie chart can only show the proportion of each item;
(4) The winning probability is 660 =10%; The probability of winning an aerobics prize is 3 15=20%.
Aerobics has a high probability of winning prizes.