Identify the null and alternative hypotheses and state which is the claim. 1) Geico publishes that, on average, you will save 15% or more on car insurance. 2) There are 34% of students who question their final grades and ask for a grade change. However, Mr. Wynn does not change final grades because you should have done your work when you were supposed to. 3) Subway states that, on average, at least 75% of its sandwiches are considered healthy. 4) The website Geekatoo.com states that using their tech support service rather than using the Geek Squad will save you, on average, 20%. 5) A tire manufacturing company states that the standard deviation of its employees' salaries is at most $3,100