Ball bearings are manufactured by a process that results in a standard deviation in diameter of 0.045 inch.Suppose the average diameter in a simple random sample of 42 tested ball bearings is 0.52 inches.Construct and interpret a 92% confidence interval for the mean diameter of all ball bearings produced usingthe process.i. Procedure: Select an answerくii. Assumptions: (select everything that applies)☐ Normal populationSimple random sampleThe number of positive and negative responses are both greater than 10Sample size is greater than 30Population standard deviation is unknownPopulation standard deviation is knowniii. Unknown parameter: Select an answer

The given values are:Sample size (n) = 42Sample mean (x̄) = 0.52 inchesStandard deviation (σ) =…

Answered: Ball bearings are manufactured by a…

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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Salaries of 40 college graduates who took a statistics course in college have a mean, x overbar, of $64,200. Assuming a standard deviation, σ, of $12,042, construct a 95% confidence interval for estimating the population mean μ.
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You measure 25 randomly selected textbooks' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 5.8 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.
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The mean diameter of a ball bearing produced by a certain manufacturer is 0.60 cm with a standard deviation of 0.04 cm. A sample of 25 ball bearings is randomly selected from a production run. The sample had a mean of 0.60008 and a median 0.60333. What is the standard error for the sample mean? O A. 0.00032 O B. 0.008 O C. 0.0016 O D. 0.00008 O E. 0.00333
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Find Test Statistic, P value, and Z score.
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