According to Canadian Radio-television and Telecommunications Commission, the number of hours of TV viewing among adults is uniformly distributed between m and 27 hours per week. Its standard deviation is 6.7 hours. 1. What is the minimum number, m, of hours per week that Canadian adults spend watching TV?
What is the expected number of TV viewing per week by Canadian adults?
What is the probability that a Canadian adult spends between 7 and 12 hours per week watching television?
If a Canadian adult spends more than 5 hours watching TV in a given week, what is the probability that his or her viewing time will be between 7 and 10 hours that week?
A random sample of 42 Canadian adults is selected. What is the probability that the total number of hours spent watching television per week by these adults is less than 523?