Can you help me solve this ?

You want to estimate the proportion, p, of neighborhoods that go to Mac Donnel's on a typical day. a. How many people in your neighborhood should you include in your random sampling to be 92% confident that you are within 0.15 of the population proportion? b. If 55 out of 92 of Sabrena's neighbors visit Mac Donnel's every day, how many people should be included in your random sampling to be 80% confident that you are within 0.2 of the population proportion