6. Given that z is a standard normal random variable, compute the following probabilities. Round the percents to 2 decimals, like 12.34%.

(a) P(z ≤ 1.00), the probability z is less than or equal to 1.00.

(b) P(z > 2.01), the probability z is at least 2.01.

(c) P(-1.00 ≤ z ≤ 1.00), the probability z is between -1.00 and 1.00.