# Question: During the 12 p m 1 p m noon hour arrivals at a

During the 12 p.m.–1 p.m. noon hour, arrivals at a curbside banking machine have been found to be Poisson distributed with a mean of 1.3 persons per minute. If x = number of arrivals during a given minute, determine the following:

a. E(x)

b. P(x = 0)

c. P(x = 1)

d. P(x ≤ 2)

e. P(1 ≤ x ≤ 3)

a. E(x)

b. P(x = 0)

c. P(x = 1)

d. P(x ≤ 2)

e. P(1 ≤ x ≤ 3)

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

During the winter heating season in a northern state, Howard’s Heating and Cooling Service receives an average of 3.1 emergency service calls per day from heating customers in their area. Howard has increased personnel and ...A discrete random variable can have the values x = 3, x = 8, or x = 10, and the respective probabilities are 0.2, 0.7, and 0.1. Determine the mean, variance, and standard deviation of x. On average, commuters in the Los Angeles, California, area require 30.0 minutes to get to work. Assume a normal distribution with a standard deviation of 5.0 minutes and a randomly selected Los Angeles-area commuter named ...Using the standard normal table, find the following probabilities associated with z: a. P(-1.96 ≤ z ≤ 1.27) b. P(0.29 ≤ z ≤ 1.00) c. P(-2.87 ≤ z ≤ -1.22) For the normal distribution described in Exercise 7.11, what first-mortgage amount would have been exceeded by only 5% of the mortgage customers? In exercise Assuming a normal distribution and a standard deviation of σ = ...Post your question