Suppose that x is normally distributed with a mean of 20 and a standard deviation of 15. What is P(-7.45 ≤x≤ 54.95)?
The heights of students in a class are normally distributed with mean 59 inches and standard deviation 8 inches. Use the Empirical Rule to determine the interval that contains the middle 68% of the heights.
Consider a spinner that, after a spin, will point to a number between zero and 1 with "uniform probability". Determine the probability: P(1⁄6 ≤ X ≤ 19⁄42).