4.) People in Los Angeles have income that is normally distributed with a mean of $65,000 and a standard deviation of $24,000. One person is selected. Find the probability that their income is : a.) above $100,000 b.) between $46,000 and $88,000 c.) What income separates the wealthiest 6%? Now 6 people are selected. Find the probability that their mean income is d.) below $50,000