Find the probability and the inverse of the following problems.
The following three problems (i.e., problems 1-3) refer to the following information:
presume the scores on an exam are normally distributed with mean μ = 75 points, and standard deviation σ = 8 points.
1. The instructor wanted to "pass" anyone who scored above 69. What proportion of exams would have passing scores?
2. What is the exam score for an exam whose z-score is 1.25?
3. Presume that the top 4 percent of the exams will be given an A+. In order to be given an A+, an exam must earn at least what score?