Please someone help me with theseThank a lot

Write the distributions of X, X, and E X. Be able to draw the distributions labeling 1,2 and 3 standard deviations from the mean. Know how to find the z-score and understand what it means. Understand how to use the 68-95-99.7 Rule to approximate as well as use the calculator Find the probability that the time to board on a specific flight was less than 40 minutes. Find the probability that the mean time to board for 25 flights is between 40 and 45 minutes. Find the probability that the sum time to board for 25 flights was more than 10 hours. Find the 80th percentile for an individual flight time to board. Find the 80th percentile for the mean flight time to board for 25 flights Find the 80th percentile for the sum flight time for 25 flights. Find the upper and lower bound for the middle 50% of the mean flight time to board for 25 flights. 2. You measure the lifetime of a random sample of 64 tires of a certain brand. The sample mean is x = 50 months. Suppose that the lifetimes for tires of this brand follow a Normal distribution and standard deviation o = 5 months. Estimate the mean lifetime of all tires of this brand at a 99% and 90% confidence level.make sure to know how to interpret your answer.) What was the margin of error at the 99% and 90% confidence level? What sample size would be needed to decrease the margin of error to within +1 month at the 99% confidence level