Apoll of 1234 adults found that 65% expect an increase in environmental pollution in the next decade. assume that this poll is a simple random of all adults that was conducted by telephone. this causes some bias, because people without phones cannot be in the sample. how is this bias reflected in the confidence statement?

Around the third week of a college class, a professor decides she’s had enough, is tired of dealing with bureaucracies, and wants out. so one day, instead of coming to class, she flies to tahiti and sells souvenirs on the beach. if this happened, the college would simply assign a substitute to finish the course. what does this tell you about the nature of the authority wielded by a professor?