Question

Po v ing A TEL 020 atma incidents in a month, d if the number of asthma incidents was greater during the winter than the summer, what would this imply about the Poisson distribution assumption? Pour people are chosen at random from a group of ten; consisting of four men and six women. Three of the women are sisters. Calculate the probabilities that the four chosen people will (a) consist of four women. (b) consist of two women and two men. (c) consists of more men than women. (d) include the three sisters. 5. The length of an injection-moulded plastic case that holds magnetic tape is normally distributed with a length of 90.2 millimetres and a standard deviation of 0.1 millimetres. (a) What is the probability that a part is longer than 90.3 millimetres or shorter than 89.7 millimetres?

#4

Answer 1

He group (o people There ate 6 Oomen 4-men dud 3 of the wmen ar sisteus we choosnng a) PC wbmen) hat a hme 6 1 421 = $x63 3L IS 6Cy 42 14 7X8XAK10 ZK S84 tol 61 41 2 212! 11 bP CaNoen and amon 2 2 t0 19 14 ISX6 2 (0 C) Plmore men than wmen PAman or Bman Iwontan =404 10c4 + to 42 Pluchde th yee ss leas)=P (a suka and twomen or 3 Sulow aud tman 3C3 3 Cs 1OcH 10c4 30