1. Suppose the winnings of gamblers at Las Vegas are normally distributed with mean µ = -300 (the typical person loses $300) and standard deviation σ = 100. Determine the probability that a gambler does not lose any money
2. A large computer company claims that their salaries are normally distributed with mean $50,000 and standard deviation 10,000. What is the probability of observing an income between $40,000 and $60,000?