1. 75% of the passengers buy in-flight meal in a flight from Hong Kong to Singapore. The...
Question:
1. 75% of the passengers buy in-flight meal in a flight from Hong Kong to Singapore. The flight is full and there are twelve passengers. What is the probability that
(a) (i) eight passengers in a cabin buys the in-flight meal;
(ii) more than 11 passengers in a cabin buys the in-flight meal
(iii) less than three passengers in a cabin buys the in-flight meal
(b) Find the mean number of passengers in a cabin do not buy the in-flight meal.
2. The number of logins by students to the SOUL system in twelve minutes has a Poisson distribution with mean equals to 9. Find the probability that there are
(a) 10 logins in twelve minutes
(b) more than 2 logins in a particular 3-minute interval
(c) 50 logins in a certain 1-hour period
Mathematical Applications for the Management Life and Social Sciences
ISBN: 978-1305108042
11th edition
Authors: Ronald J. Harshbarger, James J. Reynolds