As part of a new video game "MonsterSteer", the coding team has been looking at different attack speeds on each Monster player. It has been determined that the middle 68% of all attacks have a speed between 50 MS and 90 MS (where MS stands for Monster Speed units used in the game). Assume the distribution is approximately normal. a) Estimate the mean of the distribution of Monster attacks' speeds.

b) Estimate the standard deviation of the distribution of Monster attacks' speeds.

c) Determine the probability that a randomly selected Monster will have an attack speed more than 53 MS.

d) Determine the attack speed in MS (Monster Speed units) of the fastest 10% Monster attacks.