Ans: givan as par a car manufacturer has determined it takes an average time of 51 minutes to produce a car.
A car manufacturer has determined it takes an average time of 51 minutes to produce a...
A car manufacturer has determined it takes an average time of 58 minutes to produce a car. The population standard deviation is assumed to be 7 minutes. The company pays a bonus to the workers for every car produced in 49 minutes or less. Assuming that the production time is normally distributed, answer the following questions. Let X = production time of a randomly selected car. (Round all probabilities to four decimals and times to two decimals) a) What is...
A car manufacturer has determined it takes an average time of 53 minutes to produce a car. The population standard deviation is assumed to be 7 minutes. The company pays a bonus to the workers for every car produced in 45 minutes or less. Assuming that the production time is normally distributed, answer the following questions. Let X = production time of a randomly selected car. (Round probabilities to four decimals and times to two decimals.) a) What is the...
Suppose the average length of time to finish a homework problem is 50 minutes. If a random sample of 9 students' times has standard deviation 6, what is the approximate probability the average time of the sampled students to complete the homework will be more than 53.7 minutes?
Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa. Suppose we believe that actual flight times are uniformly distributed between 2 hours and 2 hours, 20 minutes. Which of the following graphs accurately represents the probability density function for flight time in minutes? SelectGraph #1Graph #2Graph #3Item 1 What is the probability that the flight will be no more than 5 minutes late (to 2 decimals)? What is the probability that...
If a person takes the bus 30 times a month commuting between his dorm and the Dining Hall. It takes the bus 10 minutes to run one loop. The waiting time, in minutes, for a bus to arrive is uniformly distributed on the interval [0, 10]. Suppose that waiting times on different occasions are independent. What is the standard deviation of the mean waiting time in minutes of a month? Round your answer to three decimal digits. What is the...
Pierce Car wash has, at the moment, room enough forthree cars in its approach to the automatic washer. The following tables provide information about the time between arrivals and the service times required to wash and dry a car on a particularly busy day of the week. All times are in minutes: Time Between Arrivals Probability Random Numbers 01-20 21-60 4 61-90 91-00 .3 Service Time 00-20 4 21-60 61-80 81-00 .2 Generate a simulation analysis from the data and...
A local pizza place claims that they average a delivery time of 10.14 minutes. To test this claim, you order 13 pizzas over the next month at random times on random days of the week. You calculate that the average delivery time is 8.59 minutes with a standard deviation of 1.721 minutes. You create a 99% confidence interval of (7.13, 10.05). Of those listed below, what is the best conclusion you can make? Question 7 options: 1) The percentage of...
Wendy's restaurant has been recognized for having the fastest average service time among fast food restaurants. In a benchmark study, Wendy's average service time of 2.2 minutes was less than those of Burger King, Chick-fil-A, Krystal, McDonald's, Taco Bell, and Taco John's (QSR Magazine website, December 2014). Assume that the service time for Wendy's has an exponential distribution. a. What is the probability that a service time is less than or equal to one minute (to 4 decimals)? b. What...
8. (10 points) Suppose that (26 miles) in an average of 145 minutes with a standard deviation of 14 minutes. Consider 49 randomly selected runners of this category in a particular race. Let X = the average of the 49 a category of world-class runners are known to run a marathon runners' times (a) What does the central limit theorem say about the distribution of x? (b) Find the probability that the 49 (c) Would you be surprised if one...
A telephone operator on average handles 5 calls every three minutes. What is the probability there will be no calls in the next minute given there were no calls in the last 5 minutes and interarrival times are exponentially distributed? С 1-е-5/3 O e-3/5 1-e-5/3 e-5/3 D Question 4 10 pts Suppose in a quiz there are 30 participants. A question is given to all 30 participants and the time allowed to answer it is 25 seconds. Find the number...