# Question: The number of bank robberies that occur in a large

The number of bank robberies that occur in a large North American city is Poisson distributed with a mean of 1.8 per day. Find the probabilities of the following events.

a. Three or more bank robberies in a day

b. Between 10 and 15 (inclusive) robberies during a 5-day period

a. Three or more bank robberies in a day

b. Between 10 and 15 (inclusive) robberies during a 5-day period

**View Solution:**## Answer to relevant Questions

Flaws in a carpet tend to occur randomly and independently at a rate of one every 200 square feet. What is the probability that a carpet that is 8 feet by 10 feet contains no flaws?In 2000, Northwest Airlines boasted that 77.4% of its flights were on time. If we select five Northwest flights at random, what is the probability that all five are on time? An auditor is preparing for a physical count of inventory as a means of verifying its value. Items counted are reconciled with a list prepared by the storeroom supervisor. In one particular firm, 20% of the items counted ...In a recent election, the mayor received 60% of the vote. Last week, a survey was undertaken that asked 100 people whether they would vote for the mayor. Assuming that her popularity has not changed, what is the probability ...Refer to Exercise 7.22. Determine the mean and variance of the number of games played.Post your question