Asurvey of physicians in 1979 found that some doctors give a placebo to patients who complain of pain for which the physician can find no cause. if the patients' pain improves, these doctors conclude that it had no physical basis. the medical researchers who conducted the survey claimed that these doctors do not understand the placebo effect. why?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?