Please help me answer numbers 4 and 5 ! Showing all the work will help me figure out why I keep getting the wrong answers. Thank you in advanced!

4) [ 6 nts. ] Iguana-aid corporation claims theirs soft drinks contain 345 mg of high fructose corn syrup (HF CS), with a standard deviation of 10 mg. In a sample of 25 cans of iguana-aid, the mean was 360 mg HFCS. Test the null hypothesis that the company's claim is correct. I]. = .05. Provide the information indicated below: a) Statistical Hypotheses b) Decision Rule v) Calculations (1) Decision e) Interpretation 5) [ 7 Ht!!- ] Suppose that local police are interested in determining whether the average speed of cars through a local intersection exceeds the local speed limit of 40 mph. They measure the speed (in mph) for a sample of 10 randomly selected cars passing through that intersection and collect the following data: 45, 59, 53, 50, 45, 49, 53, 38, 62, 73 Showing all necessary computations, conduct the most appropriate hypothesis test, at (1 = .05, to test whether the average speed of cars in this intersection exceeds 40 mph. Provide the information indicated below: a) Statistical Hypotheses b) Decision Rule c) Calculations (1) Decision e) Interpretation