Define the parameter of interest then use it to write the null and alternative hypothesis?

Define the parameter of interest then use it to write the null and alternative hypothesis (in symbols) for each of the following research questions.


A) Many cars have a recommended tire pressure of 32 psi (pounds per sq inch) At a roadside vehicle safety checkpoint, officials plan to randomly select 50 cars for which this is the recommended tire pressure and measure the actual tire pressure in the front left tire. They want to know whether drivers on average have to lil pressure in their tires?


B) It states that the net contents weigh 12 ounces. It is suspicious of this claim because the package never seems full to her. She plans to measure the weight of the contents of the next 20 boxes she buys and find out whether she is being short changed.|||(A) Ho: 渭 = 32 psi; H1: 渭 %26lt; 32 psi





(B) Ho: 渭 = 12 ounces; H1: 渭 %26lt; 12 ounces