One typical way to select a sample is to randomly pick phone numbers from a telephone book. Which of the following explains how the selection of the sample could be biased?

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories.if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?

The authors use the word “backbone” in lines 3 and 39 to indicate that

Which characteristic demonstrates a healthy self-esteem? accepts others does not listen well seeks constant approval frustrates easily