Approximately 24% of the calls to an airline reservation phone line result in a reservation being made. (a) Suppose that an operator handles 15 calls. What is the probability that none of the 15 calls result in a reservation

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Which best explains why this triangle is or is not a right triangle ?