According to a recent study, 9.3% of high school dropouts are 16- to 17-year-olds. In addition, 6.4% of high school dropouts are white 16- to 17-year-olds. What is the probability that a randomly...

The heights of a certain type of tree can be assumed to follow a normal distribution. How comes on cannot say, the heights follow a normal distribution? Why should we make the assumption?

At one point the average price of regular unleaded gasoline was \$ 3.61 3.61 per gallon. Assume that the standard deviation price per gallon is \$ 0.05 0.05 per gallon and use Chebyshev's...

Researchers wish to investigate the overall health of individuals with abnormally high or low levels of glucose in the bloodstream. Suppose glucose levels are normally distributed with mean 96...

The mean and standard deviation of five observations are 9 and 0 respectively. If one of the observations is changed such that the mean of the new set of five observations becomes 10, what is their...

suppose that you just received a shipment of six modems and two are defective. if two modems are randomly selected, compute the probability that at least one does not work

If one woman is randomly selected, find the probability that her height is between 63 in and 64 in. The probability is approximately nothing. (Round to four decimal places as needed.)

70% of incoming college freshmen attend public schools, the rest attend private schools. a) For a random sample of 10 college students, find he probability that exactly 7 go to a public school.