Let X be the continuous random variable of the time students have to wait for their teacher to arrive to class. The wait time, X, is uniformly distributed. Suppose X ranges between-2to4minutes to class. A negative means the teacher arrived early to class and a positive means teacher arrived late to class.

What is the Probability that the teacher arrives exactly on time, P(X=0)?

What is the Probability that the teacher arrives between-2to0minutes early?

What is the Probability that the teacher arrives between-1.1to3.9minutes early?

Find the mean wait time for students.=

Find the standard deviation wait time for students.=