In a cross-country race with 35 participants , the mean finish time was 21 minutes . which statement must be true? a-the most common finish time was 21 minutes b-at least one participant finished in exactly 21 minutes. c-over half of the participants finished in less than 21 minutes. d-if no participants finished in less than 21 minute, than everyone finished in exactly 21 minutes

because they could drop even lower..

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all