It has been reported that 50% of college students graduate in six years. Consider a random sample of 37 students and consider the number who graduate in six years. Using an appropriate probability distribution model ...    Find the probability that more than 19 students in the sample graduate in six years.  Find the probability that less than 19 students in the sample graduate in six years.

10. A sample of cars was studied. In the sample, 26 white cars were observed, 23 black, 19 grey and 13 silver. What is the probability a car in the study was black?

On a recent Saturday, a total of 1,112 people visited a local library. Of these people: 266 were under age 10, 496 were aged 10–18,   189 were aged 19–30, and the rest were more than 30 years old.One person is sampled at random. What is the probability that the person is less than 19 years old?

Airline passengers arrive randomly and independently at the passenger screening facility at a major international airport. The mean arrival rate is 5 passengers per minute. 1. What is the probability of 2 arrivals in a 1-minute period? 2. What is the probability of no arrivals in a 1-minute period? 3. What is the probability of one arrival in a 1-minute period? 4. What is the probability of at most one arrival in a 1-minute period?

Q3. A 10-year record of tornadoes per year to land in a particular region is 2, 2, 1, 3, 2, 1, 0, 2, 3, and 1. Using Poisson's distribution, what is the probability of not having tornados in any 1 year? What are the average of the number of tornadoes in 1 year?

6. A study was conducted to determine the number of emergency calls per day received by the Conestoga Valley Fire Company. The data are shown here: # of phone calls Frequency 5 7 8 28 32 21 10 (a) Construct a probability distribution for the number of phone calls. (b) Find the mean number of phone calls, rounded to the nearest tenth.