1.A random variable has a normal distribution with the mean =400=400. If 80% of the area under the curve lies to the left of 500, the area between 400 and 500 is:

2.

2.Three dice are rolled. What is the probability of getting three 6s?

3. A storeowner plans to have his annual "Going Out of Business Sale." If each month has an equal chance of being selected, find the probability that the sale will be in a month that begins with the letter J or A.