Originally Posted by

**nisoo-1** Q#1. The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have contracted this disease, what is the probability that:

(a) at least 10 survive

(b) from 3 to 8 survive

(c) exactly 5 survive

Q#2. Given a normal distribution with population Mean u=40 and , Standard Deviation= 6 find

(a) the area below 32

(b) the area above 27

(c) the area between 42 and 51

(d) the x value that has 45% of the area below it

(e) the x value that has 13% of the area above it