The number of typing errors made by a typist has a Poisson distribution with an average of seven errors per page. If more than seven errors appear on a given page, the typist must retype the whole page. What is the probability that a randomly selected page does not need to be retyped?

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.