The time required for an individual to be served in a cafeteria is a random variable that has an exponential distribution with an average of 8 minutes. What is the probability that a person is treated in less than 4.4 minutes in exactly 4 of the following 7 days?
Answer using 4 decimals.
The time required for an individual to be served in a cafeteria is a random variable...
The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a mean of 6 minutes. What is the probability that a person is served in less than 4 minutes on at least 5 of the next 7 days?
The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a mean of 4 minutes. What is the probability that a person is served in less than 2 minutes on at least 5 of the next 7 days CALCULATE PROBİBİLİTY (Round to four decimal places as needed.)
10. The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a mean of 4 minutes. (a) What is the probability that a person is served in less than 3 minutes? (b) What is the probability that a person is served in less than 3 minutes on at least 4 of the next 6 days? (Hint: use binomial distribution.)
A bus arrives every 11 minutes to a stop. The waiting time for a particular individual is assumed to be a random variable with uniform continuous distribution. What is the probability that the individual waits for more than 6 minutes? Answer using 4 decimals.
The time spent by a person talking on the phone is a random variable described by the exponential "memoryless" distribution. The mean value of that random variable is five minutes. Calculate the probability that a person is going to spend more than ten minutes talking on a phone by taking into account that the person continues to talk after five minutes?
The random variable x models the total time in hours for an individual to be served by two customer service staff working at the same rate. The probability density function is given by f(x)=4xe^-2x , x>0. 1.Derive the moment generating function 2. Hence or otherwise evaluate the expected service time. 3 find the probability that a customer is served within 1 hour. B. Find the moment generating function of f(x)=1/2e^-|x|, - infinity < x < infinity
Suppose that the time, in hours, required to repair a heat pump is a random variable X that has a gamma distribution with the parameters α = 4 and β = 2. What is the probability that the average time to repair the following 40 pumps be more than 7.5 hrs? Write the result with up to 4 decimals.
1. A Binomial random variable is an example of a, a continuous random variable b. a discrete random variable. c. a Binomial random variable is neither continuous nor discrete d. a Binomial random variable can be both continuous and discrete. Consider the following probability distribution where random variable X denotes the number of cups of coffee a random individual drinks in the morning P(x) 0.350 .400 .14 0.07 0.03 0.01 pe a. Compute the probability that a random individual drinks...
1. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes and a standard deviation of 13 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)? 2. According to the...
The time between arrivals of customers at an automatic teller machine is an exponential random variable with a mean of 5 minutes. A) What is the probability that more than three customers arrive in 10 minutes? B) What is the probability that the time until the 6th customer arrives is less than 5 minutes?