statistics and probability

9:30 GH 9:30 GH X 5.R Hmwk - Chapter Re... 4 Need Help? Read It 13. [-/0 Points] DETAILS BBUNDERSTAT12 5.R.015. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A person with a cough is a persona non grate on airplanes, elevators, or at the theater. In theaters especially, the irritation leve each muffled explosion. According to Dr. Brian Carlin, a Pittsburgh pulmonologist, in any large audience you'll hear about 12 coughs per 11. [-/0 Points] DETAILS BBUNDERSTAT12 5.R.020. minute. (a) Let / = number of coughs in a given time in val. Explain why the Poisson distribution would be a good choice for the MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER probability distribution of . O Coughs are a rare occurrence. It its are dependent. Cathy is planning to take the Certified Public Accountant Examination (CPA exam). Records kept by the colege of business from which O Coughs are a common occur are dependent. she graduated indicate that 65% of students who graduated pass the CPA exam. Assume that the exam is changed each time it is given. Letn = 1, 2, 3,.. represent the number of times a person takes the CPA exam until the first pass. (Assume the trials are Coughs are a common oce the events are independent. independent.) O Coughs are a rare occur are independent. (a) What is the probability that Cathy passes the CPA on the first try? (Use 2 decimal places.) b) Find the probability of four of fewer coughs (in a large auditorium) in a 1-minute period. (Use 4 decimal places ) (b) What is the probability that Cathy passes the CPA ex on the second or third try? (Use 4 decimal places.) c) Find the probability of at least four coughs (in cond period. (Use 4 decimal places.) Need Help? Read It Need Help? Read It Watch it 12. [-/0 Points] DETAILS BBUNDERSTAT12 5.R.011.5