Show answer written for non math major using simplistic step by step English formula and TI 83 calculator

Exercise 6.8.8

Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel)

c. Find the percent of her laps that are completed in less than 130 seconds. d. The fastest 3% of her laps are under _______ .

e. The middle 80% of her laps are from _______ seconds to _______ seconds.