(2 pts) Round answers below to three decimal places. The number of typographical errors that appears in a story posted on a news-oriented website approximately follows a Poisson distribution with a mean of 4.2. (a) The probability that a randomly selected story will contain exactly 5 typographical errors is [j . (b) The probability that a randomly selected story will contain at least 6 typographical errors but fewer than 8 typographical errors is ann- Vnn r'nn mm narh'nl' r'mrr nn thin nmhlnm