7 A random sample of 50 observations was made on the diameter of spot welds and the corresponding weld shear strength.(a) Given that r = 0.62, test the hypothesis that p = 0, using a = 0.01.O Reject Ho.O Do not reject Ho.eTextbook and Media(b) Find a 99% confidence interval for p.Round your answers to two decimal places (e.g. 98.76).i eTextbook and Media(c) Based on the confidence interval in part (b), can you conclude that p = 0,5 at the O.01 level of significance?O NoO Yese Textbook and Media

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Answered: A random sample of 50 observations was…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Fission tracks are trails found in uranium-bearing minerals, left by fragments released during fission events. The article “Yo-yo Tectonics of the Niğde Massif During Wrenching in Central Anatolia” (D. Whitney, P. Umhoefer, et al., Turkish Journal of Earth Sciences, 2008:209–217) reports that fifteen tracks on one rock specimen had an average track length of 13 μm with a standard deviation of 2 μm. Assuming this to be a random sample from an approximately normal population, find a 99% confidence interval for the mean track length for this rock specimen.
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An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 421 422 423 425 427 430 435 437 439 446 446 448 453 456 463 464 Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) ( , )
A selected sample of ?n water specimens and estimate the mean daily rate of pollution produced by a mining operation. If the EPA wants a 99% confidence interval with a margin of error of 0.8 milligram per liter (mg/L), how many water specimens are required in the sample? Assume prior knowledge indicates that pollution readings in water samples taken during a day have been approximately normally distributed with a standard deviation of 4.5 (mg/L).
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Construct a 90% confidence interval for the true average cost of a 50000 kilometre car service in Sandton , if it was found that a sample of 20 different garages in the area charged an average of R1000 for a service. Assume a population standard deviation of R90.26
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A selected sample of nn water specimens and estimate the mean daily rate of pollution produced by a mining operation. If the EPA wants a 95% confidence interval with a margin of error of 0.8 milligram per liter (mg/L), how many water specimens are required in the sample? Assume prior knowledge indicates that pollution readings in water samples taken during a day have been approximately normally distributed with a standard deviation of 5.9 (mg/L). n=
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A random sample of 50 observations was made on the diameter of spot welds and the corresponding weld shear strength. (a) Given that r = 0.62, test the hypothesis that p = 0, using a = 0.01. O Reject Ho- O Do not reject Ho. eTextbook and Media