Assume that X, the starting salary offer to psychology majors is normally distributed with a mean of $47,507 and a SD of $5000.

Question

1. The probability that a randomly selected psychology major received a starting salary offer greater than $52,000 is______.

2. The probability a randomly selected psychology majors received starting salary offer between $42,000 ad $52,000 is _____.

3. What percent of psychology majors received a starting offer between $38,000 ad $45,000?

4. Twenty percent of psychology majors were offered a starting salary less than___.

Would you please explain the solution instead of just giving the answer. I'd appreciate it very much, thank you.

Answer 1

0.8159
91.92%
72.02

Answer 2

1) 45000

Answer 3

Twenty percent of information systems majors were offered a starting salary greater than