MATH 225N Week 6 Assignment Confidence Interval for Mean – Population Standard Deviation Known A Questions And Answers Verified Grade A

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Confidence Intervals for Mean - Population Standard Deviation Known, 2024/2025 Edition by Dr. Larry J. Scharf, and Dr. James William Fowler, and Dr. Alan Guenther, and Dr. Michael C. Hines, and Dr. Raymond A. Marquis

This resource is perfect for students preparing for their statistics exams, helping them to master confidence intervals for mean with a population standard deviation known. The content is designed to be engaging and accessible, making it easy for students to learn the material and achieve success on their first attempt.

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MATH 225N Week 6 Assignment Confidence Interval for Mean – Population Standard Deviation Known A Questions And Answers Verified Grade A Week 6 Assignment Confidence Interval for Mean - Population Standard Deviation MATH 225N Week 6 Assignment- Confidence Interval for Mean - Population Standard Deviation Known Confidence Intervals for Mean - Population Standard Deviation Known, 2024/2025 Edition by Dr. Larry J. Scharf, and Dr. James William Fowler, and Dr. Alan Guenther, and Dr. Michael C. Hines, and Dr. Raymond A. Marquis MATH 225N Week 6 Assignment Confidence Interval for Mean – Population Standard Deviation Known A( Download To Score An A) selects simple random samples of 30 finished products and computes the sample mean product weight. If test results over a long period of time show that 5% of the values are over 2.1 pounds and 5% are under 1.9 pounds, what are the mean and the standard deviation for the population of products produced with this process? Assuming a "Normal" distribution Mean = (1/2)(2.1 1.9) = 2.0 With 5% in each tail, we have 90% in the middle of the distribution. This translates into a z-value of P(Z < z*) = 0.05 has a z* = 1.645 2.0 (1.645)(s) = 2.1 s = 0.1 / 1.645 = 0.06079 5. In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta restaurant, data were collected for a sample of 49 customers. Assume a population standard deviation of $5. a. At 95% confidence, what is the margin of error? The margin of error is found using the following formula: In order to find the margin of error we need to find first. Since we want a confidence level of 95% this implies that = 5%, which means that = 0.025. =-1.959963986 Margin of error is equal to (-1.9599)(5/(49) = -1.399928571 b. If the sample mean is $24.80, what is the 95% confidence interval for the population mean? σ = 5 x = 24.8 ̅ n= 49 Confidence level = .95 Z Interval (23.4, 26.2) x =24.8 ̅ This study source was downloaded by 100000829219024 from CourseHero.com on 08-1 MATH 225N Week 6 Assignment 2020 | MATH225N Week 6 Assignment 2020 - Chamberlain College of Nursing | Confidence Interval for Mean – Population Standard Deviation Known( A Grade) MATH 225N Week 6 Assignment Confidence Interval for Mean – Population Standard Deviation Known (B) Questions And Answers Verified Grade A Solutions Latest 2020 MATH 225N Week 6 Assignment Confidence Interval for Mean – Population Standard Deviation Known MATH 225N Confidence Interval for Mean - Population Standard Deviation Known.(WINTER)

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