I posted this in Advanced questions 4 hours ago and the person who reserved the question did not answer. Can anyone answer this in 20 min or less?

A.C. Nielesen Company provides information to organizations advertising ontelevision.Prior research indicates that adult Americans watch an average of 6.0 hoursper day of television. The standard deviation is 1.5 hours. Assume the time distributionis normally distributed.

1.What is the probability that a randomly selected adult Americans watches 5 or morehours of television per day?

2.What is the probability that a randomly selected adult Americans watches between 7and 8 hours of television per day?

3.For how many hours per day must an adult American watch television in order to be inthe top 5% of adult American television watchers?

4.In a sample of 25 randomly selected adult Americans what is the probability that theaverage time for watching television per day will be equal to or exceeds 6.5 hours?