*A hospital in India loan officer rates applicants for credit. The ratings are normally distributed

with a mean of 620 and a standard deviation of 70. An applicant is randomly selected.

1. Find the probability of a rating that is over 750.

2. What cutoff score would separate the highest 20%?

*in completion time, in working days of a certain task in a hospital are normally

distributed, and that 33% of interns in this hospital take more than 14 working days. If

the standard deviation of completion time is 4.5 days. What is the mean completion

time?