The stress of getting engaged has precipitated a neurotic episode, and Edward has had to be hospitalised. He is, however, concerned that this predicament will delay his wedding, which is to happen in...

The stress of getting engaged has precipitated a neurotic episode, and Edward has had to be hospitalised. He is, however, concerned that this predicament will delay his wedding, which is to happen in 30 days’ time. He finds out that hospitalisation for neurotic episodes is normally distributed with a mean of 21  days and a variance of 9 days. Edward wants to calculate how long he can expect to be hospitalised. He wants to have 95% confidence in his conclusions. If you struggle with this exercise, try it again after completing the next tutorial.