Statistics and Probability

Answer the following:

A. Identify if the given hypothesis about the statement is the null or the alternative hypothesis and write it in symbols. Write your answer on the space provided on each item. 1. An airline company claims that its flight arrived early 92% of the time. H = All of the flights arrive early 92% of the time. In symbols, 2. An investment company claims that its clients make an average of 8% return on investments every year. H = Clients do not make an average of 8% return on investments every year. In symbols, 3. The General Manager of an air conditioner tells an investigative reporter that at least 85% of its customers are "completely satisfied" with their overall purchase performance. H Customers who are completely satisfied with their overall purchase performance is lesser than 85%. In symbols. 4. A student counselor claims that Grade 7 Math students spend an average 3 hours per week doing exercises in cach subject. H =The average number of hours per week spent by students in doing exercises in each subject is 3 hours. In symbols