Historically, the average arrival rate at an airport is 195 flights per hour. The population standard deviation is known and isequal to 13. Airport management would like to increase arrivals so they implemented a new traffic control procedure. Afterimplementing the new procedure, a sample of arrivals during 30 days was collected and showed a mean arrival rate of 200flights per hour. Using a = 0.1, does the sample show that the new procedure is effective?(a) State the null and alternative hypothesesa. Ho: ≥195Η: μ < 195b. Ho: ≥ 200H₁: <200c. Ho: HS 195H₁: > 195d. Ho: μ= 195e.H₁:195Ho: ≤200H₁: >200(b) Calculate the test statisticofa. -2.11b. 197.26c. 2.11d. 117.84

To address this query, we'll follow a two-step process, first defining the correct hypotheses, and…

Answered: Historically, the average arrival rate…

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

A researcher is conducting a study to determine the mean trough dosage of medication for a population. Assume a previous study was conducted for the same medication and the mean trough dose was found to be 300 mg with a standard deviation of 30 mg. If the researcher wants to be 95% confident the true mean trough dosage of the medication is within 10 mg of the true mean trough dosage, what sample size is needed?
Peak expiratory flow (PEF) is a measure of a patient’s ability to expel air from the lungs. Patients with asthma or other respiratory conditions often have restricted PEF. The mean PEF for children free of asthma is 306. An investigator wants to test whether children with chronic bronchitis have restricted PEF. A sample of 50 children with chronic bronchitis is studied, and their mean PEF is 251 with a standard deviation of 71. When you run the appropriate test at a = 0.05, the appropriate conclusion to whether there statistical evidence of a lower mean PEF in children with chronic bronchitis is?
the number of eggs female house flies lay during a lifetime is normally distributed what a mean of 800 eggs and a standard deviation of 100. random samples of size 15 are drawn from this population and the mean of each sample is determined. what is the mean? what is the standard error?
At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 28 minutes and a standard deviation of 2 minutes. What percentage of customers have to wait less than 31 minutes, to the nearest tenth?
According to the National Sleep Foundation, all children should get 10 hours of sleep each right. In a survey of 56 parents, it was found that their children had a sample mean of 8.9 hours, with a sample standard deviation of 3,2 hours. Does this evidence suggest that children are sleeping less hours than the amount they should be getting (10 hours)? Use a=0.01 level of significance and any approach you chose to test the mean
The average amount of rainfall during the summer months for the midwestern part of the US is more than 13 inches. Rainfall amounts are generally normally distributed. A researcher selects a random sample of 15 cities in the Midwest and finds that the average amount of summer rainfall is 11.42 inches. The standard deviation of the sample is 2.13 inches. Using α = 0.05, can it be concluded that the mean rainfall in the Midwest is more than 13 inches? What is the decision for this hypothesis test? The average amount of rainfall during the summer months for the midwestern part of the US is more than 13 inches. Rainfall amounts are generally normally distributed. A researcher selects a random sample of 15 cities in the Midwest and finds that the average amount of summer rainfall is 11.42 inches. The standard deviation of the sample is 2.13 inches. Using α = 0.05, can it be concluded that the mean rainfall in the Midwest is more than 13 inches? What is the decision for this hypothesis test?…
Leaf length of a type of flower, in cm, are Normally distributed. It is further given that 0.13 of these flowers' leaf lenght are shorter than 6 cm and 0.03 are longer than 9 cm. Find the mean and the standard deviation of the leaf length of these type of flowers.
For a random sample of 90 overweight men, the mean number of pounds that they were overweight was 35. The standard deviation of the population was 3.5 pounds. Find the best point estimate of the number of excess pounds that they weighed.
The breaking strengths of cables produced by a certain manufacturer have historically had a mean of 1750 pounds and a standard deviation of 60 pounds. The company believes that, due to an improvement in the manufacturing process, the mean breaking strength, u, of the cables is now greater than 1750 pounds. To see if this is the case, 50 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1770 pounds. Can we support, at the 0.10 level of significance, the claim that the population mean breaking strength of the newly-manufactured cables is greater than 1750 pounds? Assume that the population standard deviation has not changed. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H. Ho : H :0 ロロ (b) Determine the…
According to the National Association of Realtors, it took an average of three weeks to sell a home in 2017. Suppose data for the sale of 39 randomly selected homes sold in Greene County, Ohio, in 2017 showed a sample mean of 3.6 weeks with a sample standard deviation of 2 weeks. Conduct a hypothesis test to determine whether the number of weeks until a house sold in Greene County differed from the national average in 2017. Use α = 0.05 for the level of significance, and state your conclusion. (a) State the null and alternative hypothesis. (Enter != for ≠ as needed.) H0: Ha: (b) Find the value of the test statistic. (Round your answer to three decimal places.)______ Find the p-value. (Round your answer to four decimal places.) p-value = (c) State your conclusion. (A)Reject H0. There is not a statistically significant difference between the national average time to sell a home and the mean time to sell a home in Greene County. (B)Do not reject H0.…
Assume that the mean weight for American men in their twenties is 180 pounds with a standard deviation of 25 pounds. You decide to conduct a study to determine whether the weight of men enrolled at UWM differs from the population of twenty-year-old men in general. Suppose you sample 100 UWM men and find that the mean weight of this sample is 175 pounds. You use a two-tailed test (α = .05) to test your research question (Is the weight of UWM men significantly different from the general population of men in their twenties?) Develop a Null and Alternative hypothesis regarding this sample (1 point): Is the weight of UWM men significantly different from the general population of men in their twenties? Sketch out the normal curve to demonstrate how you drew this conclusion. (Hint: You need to solve for σM before you can compute your z-score!) (1 point)
A survey of 32 people was conducted to compare their self-reported height to their actual height. The difference between reported height and actual height was calculated.You're testing the claim that the mean difference is greater than 1.4.From the sample, the mean difference was 1.6, with a standard deviation of 0.48.

SEE MORE QUESTIONS

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