Donna the trainer has two solo workout plans that she offers her clients: plan a and plan b. each client does either one or the other (not both). on wednesday there were 5 clients who did plan a and 6 who did plan b. on thursday there were 3 clients who did plan a and 2 who did plan b. donna trained her wednesday clients for a total of 12 hours and her thursday clients for a total of 6 hours. how long does each of the workout plans last?
lengthofeachplanaworkout: hour(s)
lengthofeachplanbworkout: hour(s)

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. what is the probability that a household views television between 4 and 10 hours a day? (to 4 decimals) b. how many hours of television viewing must a household have in order to be in the top 7% of all television viewing household? (to 2 decimals) c. what is the probability that a household views television more than 4 hours a day? (to 4 decimals)