Suppose a student either has 1, 2, or 3 finals to take each with a respective probability of 0.16, 0.48, and 0.36.
1) What is a student's expected number of finals?
Suppose a student either has 1, 2, or 3 finals to take each with a respective probability of 0.17, 0.46, and 0.37.
2) What is the standard deviation for number of finals?