The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?

________ analysis involves the comparison of different firms' financial ratios at the same point in time

A) Time-series B) Cross-sectional C) Marginal D) Technical

What type of random variable is necessary for a Monte Carlo valuation?

A) Standard normal distribution B) Normal distribution C) Lognormal distribution D) All of the above