1. The gestation period for human births can be taken as normally distributed with a mean of 256 days and a standard deviation of 16 days. If a gestation period is 276 days, what percentile among human births is this?

2. The risk of hepatoma among alcoholics without cirrhosis of the liver is 32%. Suppose we observe 9 alcoholics without cirrhosis. What is the probability that exactly one of these 9 people have a hepatoma?

3. After attending a church cookout, a number of the attendees are admitted to the emergency room with nausea, vomiting, and diarrhea. After discovering all the individuals admitted to the ER consumed the egg salad at the event, the leftover egg salad was tested and found to be positive for salmonella. If 83 individuals consumed the egg salad and 49 individuals were admitted to the ER with salmonella, what was the cumulative incidence of salmonella assuming that the 49 individuals admitted to the ER were the only ones to be affected by the bacteria?

Group of answer choices

a. 0.590

b. 0.410

c. 0.059

d. 0.041

4. If there are outliers, then the mean will be greater than the median.

Group of answer choices

True

False