The operation manager at a tire manufacturing company believes that the mean mileage of a tire is21,009 miles with a variance of 6,220,036. What is the probability that the sample mean would differ from the population mean by less than 655 miles in a sample of 79 tires if the manager is correct

Which point of view does the narrator use in the passage?

Harry didn't know anything about the wizard prison, though everyone he'd ever heard speak of it did so in the same fearful tone. Hagrid, the Hogwarts gamekeeper, had spent two months there only last year. Harry wouldn't soon forget the look of terror on Hagrid's face when he had been told where he was going, and Hagrid was one of the bravest people Harry knew.

Nancy and Fabian’s dinner bill at a restaurant is $28 before tax. The tax on their meal is 2.5%. How much is Nancy and Fabian's final bill after tax is added?