Determine the hypotheses and the hypothesis test. 1. Company XYZ manufactures calculators with an average mass of 450g. An engineer believes that average weight to be different and decides to calculate the average mass of 50 calculators. 2. The teachers in a school believes that at least 80% of students will complete high school. A student disagrees with this value and decides to conduct a test. 3. A teacher wishes to test if the average GPA of students in the high school is different from 2.7. 4. The percentage of residents who own a vehicle in town XYZ is no more than 75%. A researcher disagrees with the value and decides to survey 100 residents asking them if they own a vehicle