Ex 34) Use Bayes’ theorem to determine P(A3| B1)
Chapter 6:
Ex 4) Which of these variables are discrete and which are continuous
random variables?
a. The number of new accounts established by a salesperson
b. The time between customer arrivals to a bank ATM
c. The number of customers in Big Nick’s barber shop
d. The amount of fuel in your car’s gas tank
EX. 14) The U.S postal service reports 95% of first-class mail within
the same city is delivered within 2 days of the time of mailing. Six
letters are randomly sent to different locations.
a) What is the probability that all six arrive within 2 days?
b) What is the probability that will arrive within 2 days.
c)
Compute the variance of the number that will arrive within 2
days.
d) Compute the standard deviation of the number that will arrive
within 2 days.
Ex 20) Binomial Distribution