help me please

Identify the Null and Alternative Hypothesis in the following. 1. A university claims that working students earn an average of Php 20 per hour.| 2. A study claims that adults watch television an average of 1.8 hours per day. But some say that the average per day is less than 1.5 hours a day 3. An airline company claims that its flight arrive early 92% of the time, but in a survey of 25 persons, they say that the claim is greater than 82%. 4. An investment company claims that its clients make an average of 8% return on investments every year. 5. The General Manager of Evesh'n'Easy air conditioners tells an investigative reporter that at least 85% of its customers are "completely satisfied" with their overall purchase performance. 6. A student counselor claims that Grade 7 Math students spend an average 3 hours per week doing exercises in each subject. But in a survey of 100 students, they say that they spend more than 3 hours in a week. 7. A manufacturer has developed a new fishing line, which the company claims has a mean breaking strength of 15 kilograms. 8. A school reports an average grade of 84 among its currently enrolled grade 11 students. Some parents believe that students' average is greater than 84. 9. An electric company says that the average consumption of residents in Labogon is 150KWh per month. But the barangay captain says their barangay consume less. 10. A health magazine claims that the average coffee consumptions of adults in a certain region is 5 cups a day. However, some believe that it is not true