A town’s athletic league contains 18 baseball teams. The board members of the league want to survey adults attending games to determine if they believe the athletes are showing good sportsmanship. The board members attended one game and surveyed an equal number of adults supporting each of the two teams. Which best explains the validity of the results?

I would say that this study is biased because the board members only attended 1 game when there are 18 teams.  Their data will only pertain to fans of the 2 teams playing each other, and not represent the population as a whole.

Step-by-step explanation:

i would say invalid because the sampled adults are not part of the population

power property.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)