The distance travelled per day, D km, by local bus drivers is normally distributed with D ~ N(110.0,13.5). What is the probability that a randomly selected bus driver travel less than 109.7km per day? (Give your answer in 3 d.p)

Kelly realized that 4% of his students' exams have academic integrity issues.  He plans to go through the exams at random to find one with academic integrity issues.  Let X be the number of exams Kelly selects until he finds one with academic integrity issues.   a) Find the probability that the 18 th exam Kelly selects will be the first with academic integrity issues. State your answer as a percentage rounded your answer to 2 decimal places. b) What is the probability of finding an exam with academic integrity issues within the first 5 exams? Round your answer to 3 decimal places.

The probability that a certain type of sea turtle hatching survives until adulthood is assumed to be 1 out of 1,877.  If 980 hatchlings incubate in a certain nesting area, calculate the probability that at least 3 survive to adulthood. Use three decimal place accuracy.

Make a histogram of the probability distribution of X. Describe its shape.