According to genetic theory, the blossom color in the second generation of a certain cross of sweet peas should be red or white in a 3: 1 ratio. That is, cach plant has probability of having red blossoms, and the blossom colors of separate plants are independent. (c) What is the probability of obtaining at least 45 red-blossomed plants when 60 plants are grown from seeds? Use the Normal approximation. O 0.45 0.65 0.75 0.50

for a publisher of technical books, the probability that any page contains at least one error is p = .005. Assume the errors are independent from page to page. What is the approximate probability that one of the 1,000 books published this week will contain at most 3 pages with errors?

Flying over the western states with mountainous terrain in a small aircraft is 40% riskier than flying over similar distances in flatter portions of the nation, according to a General Accounting Office study completed in response to a congressional request. The accident rate for small aircraft in the 11 mountainous western states is 3.5 accidents per 100,000 flight operations. (c) Find the probability of at least 2 accidents in 180,000 flight operations. (Use 4 decimal places.)

The mean GPa of university students is 2.3 with a SD of 1.2. If you were to draw 36 students at random and compute their mean GPA, what is the exact probability that this mean will be 2.67 or less? Use four decimal places.