* Incorrect.The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.1 minutes andstandard deviation 1.5 minutes. Suppose that a random sample of = 47 customers is observed. Find the probability that the averagetime waiting in line for these customers is(a) Less than 10 minutes(b) Between 5 and 10 minutes(c) Less than 6 minutesRound your answers to four decimal places (e.g. 0.9876).(a) The probability is i 0.8974(b) The probability is i0.8780(c) The probability is i 0.0808Statistical Tables and Charts

If Xi's are iid random variables with common mean μ and common sd σ then, X ~a N(μ, σn), for…

Answered: The amount of time that a customer…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Suppose Kristen is researching failures in the restaurant business. In the city where she lives, the probability that an independent restaurant will fail in the first year is 51%.51%. She obtains a random sample of 84 independent restaurants that opened in her city more than one year ago and determines if each one had closed within a year. What are the mean and standard deviation of the number of restaurants that failed within a year? Please give your answers precise to two decimal places.
In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 56.1 inches, and standard deviation of 1.8 inches.What is the probability that the height of a randomly chosen child is between 59.1 and 60.3 inches? Do not round until you get your your final answer, and then round to 3 decimal places.Answer= (Round your answer to 3 decimal places.)
According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 68 inches and a standard deviation of 2.5 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where possible. Find the probability that the person is between 69.9 and 70.9 inches. The middle 30% of Martian heights lie between what two numbers? Round to the nearest tenth. Low: inches High: inches
The waiting time to get food at a fast-food restaurant is 4.7 minutes on average with standard deviation of 2.5 munutes. Suppose that a sample of 32 customers is randomly selected. A. What are the mean and standard deviation of the sample mean waiting time of 32 customers? Mean = Standard Deviation (standard error of the mean) minutes minutes Round standard error to 5 decimal places. B. What is the probability that the average waiting time of 32 customers is less than 4.4 minutes? Round to 4 decimal places. C. What is the probability that the average waiting time of 32 customers is greater than 4.8 minutes? Round to 4 decimal places. D. What is the probability that the average waiting time of 32 customers is between 4.4 and 4.8 minutes? Answer: Answer:
The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a mean time between eruptions of 85 minutes. If the interval of time between the eruptions is normally distributed with a standard deviation 21.25 minutes. (b) What is the probability that a random sample of 6 time intervals between eruptions has a mean longer than 97? The probability that the mean of a random sample of 6 time intervals is more than 97 minutes is approximately?
The monthly electric bill for all Great Lakes Electric Company are known to be distributed as a normal distribution with a mean equal to 87.00 a month and a standard deviation of 36.00. If a statistical sample of n=100 customers is selected at random, what is the probability that the mean bill for those sampled will exceed 75.00?
If a random member (x) is selected from a normal distribution having a mean of 80 and standard deviation of 5, what is the probability that the value of x lies between 78 and 83? Show your formula etc along with your answer.
The mean total cholesterol for a population of men between the ages of 20 and 29 is 180 micrograms per decilitre with a standard deviation of 37.4. A healthy total cholesterol level is less than 200, 200-240 is border line, and above 240 is dangerous. Assume the distribution is approximately Normal. For a randomly selected man from this group, what is the probability that his total cholesterol level is 200 or more? Between 200 and 240? On a standardized test, scores are normally distributed with a mean of 400 and a standard deviation of 80. What score must one have to be in the 80th percentile?
A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.25 years. The lifetime of a dishwasher is normally distributed. Suppose you are a manufacturer and you take a sample of 15 dishwashers that you made. Find probability that the sample mean lifetime of the 15 randomly selected dishwashers is less than 12.6 (4 decimals) find the probability that the sample mean lifetime of the 15 randomly selected dishwashers is less than 11.4 years thank u for the help
The time required to complete a final examination in a particular forestry subject is normally distributed, with a mean of 100 minutes and a standard deviation of 15 minutes. What is the probability of the following? (a) A student will complete the exam in at most 90 minutes? (b) A student will complete the exam in more than 75 minutes but less than 95 minutes? (c) Assume that the class has 60 students and that the examination period is 2 hours in length. How many students do you expect will be unable to complete the exam in the allotted time?
The average age of major league baseball players is 29.5 years and has a standard deviation of 2 years. If we can assume that ages are normally distributed, what is the probability that the average age of 9 randomly selected Detroit Tigers players is less than 28 years?

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS