A sports academy decides to survey athletes at the academy about how closely they follow their recommended nutrition plan. Coaches at the academy are responsible for administering the surveys. Each coach will have a one-on-one discussion with each of their athletes in which they
will ask the athlete the survey questions and write down their responses.
What is a source of bias in this sampling method?

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0