Airlines report that 45% of its flights are on time.  In a random sample of 80 flights, what is the probability that fewer than 45 will be on tim

96 percent of adults own a smart phone around the world. In a random sample of 250 adults, what is the probability that 94% or more will own a smart phone?

This problem involves students who have taken Calculus in high school. Assume that 10 percent of students have taken calculus in high school. Of those who have taken calculus in high school, 70 percent plan to major in science. Of those who did not take calculus in high school, only 35 percent plan to major in science. What is the probability that a randomly selected student plans to major in science?

Suppose that 57% of people own dogs. If you pick two people at random, what is the probability that they both own a dog? Give your answer as a decimal (to at least 3 places) or fraction

This problem involves students who have taken Calculus in high school. Assume that 35 percent of students have taken calculus in high school. Of those who have taken calculus in high school, 75 percent plan to major in science. Of those who did not take calculus in high school, only 20 percent plan to major in science. What is the probability that a randomly selected student plans to major in science?

Records show that 66% of employees at a high level research facility have a doctorate degree. If 14 employees are chosen at random, Find the probability that exactly 11 of those employees have doctorate.

52% of dogs enjoy biting the mailman. Select 5 random dogs. What's the probability AT LEAST 1 Enjoys biting the mailman, in percentage form

Fifty-three percent of U.S. households have a personal computer. In a Random sample of 250 households, what is the probability that fewer than 120 have a PC?

Airlines report that 45% of its flights are on time.  In a random sample of 80 flights, what is the probability that exactly 42 will be on time?

Approximately 10% of the population is left-handed. What is the probability that exactly two students among the 20 students in a Statistics class is left-handed?