5. The OPPA company's assembly line supervisor wants to commit to assembling anew smartphone similar to the one currently being assembled, but with a time of lessthan 7 minutes. For which, a sample is carried out taking the assembly time of 25operators, obtaining the following resultsa) According to the supervisor, there is an average assembly time 7.2 less than 7minutes. Is the statement true?b) On the part of the production manager, consider that, if the variation between thestandard deviation and the mean is less than 10.12% then justify your answer. canapprove the assembly process. Is the process approved?6.9 7.1 5.85.98.17.2 6.7 7.2 7.06.98.188776713321848.3 7.6 6.87667ad99727.3 7.4 6.41776.2 8.1 7.37.5 6.9 8.2 5.9

Given data: 8.16.97.15.88.37.66.85.97.37.46.48.17.26.77.27.06.96.28.17.37.56.98.25.9We have to test…

Answered: 5. The OPPA company's assembly line…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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16.
You want to obtain a sample to estimate a percentage of Statistics students at ACM that get a grade of at least a C. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. a) You have no reasonable estimate for the population proportion. You do not know the number Statistics students at ACM. How large of a sample size is required? b) You estimate the population proportion to be 90 percent. You do not know the number Statistics students at ACM. How large of a sample size is required? c) You have no reasonable estimate for the population proportion. You know that there is a total of 800 Statistics students at ACM. How large of a sample size is required? d) You estimate the population proportion to be 90 percent. You know that there is a total of 800 Statistics students at ACM. How large of a sample size is required?
You are working on the design for a study on the proportion of adults who work remotely in the U.S. The original design sought to limit the margin of error to 0.1 and the new design seeks to limit the margin of error to 0.01. What must be the corresponding change to the minimum sample size? A. It must increase B. Nothing, because the minimum sample size doesn't depend on margin of error C. It must decrease
The average customer wait time at a QuickServe Restaurant chain is currently 8 minutes. The restaurant is considering implementing a new order processing system if sample data suggests it significantly decreases the average customer wait time. a) What is the Type I Error and what are the business consequences of a Type I Error? b) What is the Type II Error and what are the business consequences of a Type II Error? 1 allows
You want to obtain a sample to estimate a population proportion. You would like to be 95% confident that your estimate is within 2.5 % of the true population proportion. a) Based on previous evidence, you believe the population proportion is approximately 31%. What is the smallest possible sample size that will work? The smallest possible sample size is b) If, instead, you have no initial guess for the population proportion, what is the smallest possible sample size that will work? The smallest possible sample size is
You are being consulted by a level 400 psychology student on her final project. Her work entails estimating the proportion of students in University of Ghana who are claustrophobic i.e. having an extreme or irrational fear of confined places. a) What is the population in her case?
1) A state university wants to increase its retention rate of 4% for graduating students from the previous year. After implementing several new programs during the last two years, the university reevaluated its retention rate using a random sample of 352 students and found the retention rate at 5%. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed. 1)
Please answer all the requirements in question B Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Do not provide Excel Screet shot rather use tool table Answer completely.
b) A certain pay television company wishes to estimate the proportion of its customers who would purchase a pay television program guide. To do this, the company manager decides to select a random sample of customers and note the number who would purchase a program guide. Suppose that experience in other areas suggests that about 13% of customers will purchase a program guide. How many customers should the company manager include in his sample if he wishes to estimate the true proportion who will purchase the program guide correct to within 5% (0.05) with a confidence level of 95%?
9. You wish to estimate, with 99% confidence, the population proportion of US adults who think they should be saving more money. Your estimate must be accurate within 3% of the population proportion. a. No preliminary estimate is available. Find the minimum sample size b. Find the minimum sample size needed, using a prior study that found that 63% of US adults think they should be saving more money.
In a certain survey, 516 people chose to respond to this question: "Should passwords be replaced with biometric security (fingerprints, etc)?" Among the respondents, 55 % said "yes." We want to test the claim that more than half of the population believes that passwords should be replaced with biometric security. Complete parts (a) through (d) below. a. Are any of the three requirements violated? Can a test about a population proportion using the normal approximation method be used? A. The sample observations are not a random sample, so a test about a population proportion using the normal approximating method cannot be used. B. One of the conditions for a binomial distribution are not satisfied, so a test about a population proportion using the normal approximating method cannot be used. C. All of the conditions for testing a claim about a population proportion using the normal approximation method are satisfied, so the method…
A market researcher company requested all employees of a particular agency to fill up a questionnaire in relation to their product market study. The following are some of the information supplied by the employees: • civil status • number of children in the household • distance travelled by the employee in going to agency • brand of shampo0 being used • number of hours standing in queue while waiting to be served by a bank teller • number of text messages sent in day a. If we are consider the collection of information gathered through the completed questionnaire, what is the population for this data set? b. Which variables are qualitative or quantitative? If quantitative, classify as discrete or continuous?

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