Evaluate the performance of the process

Reference no: EM131000603

A manufacturer of 10 mm diameter ball bearings uses a process which, when operating properly, is calibrated to produce ball bearings with mean diameter μ = 10.00 mm and standard deviation σ = 0.10 mm. In order to evaluate the performance of the process at a particular point in time, a random sample of n ball bearings is to be taken and the diameters determined in a quality control laboratory. Determine the sample size n such that P (10.00 - 1.96σX¯ ≤ X¯ ≤ 10.00 + 1.96σX¯ ) = 0.05 where σX¯ is the standard deviation of the sample mean, X¯ . State whatever assump- tions you may have to make in answering this question.

Reference no: EM131000603

Questions Cloud

The wham company uses normal costing : The Wham Company uses normal costing in its job-order costing system. At the beginning of 2015, the company had only one job in its Work in Process Control account. That was Job 444, which had a balance of $7,000 as of the end of 2014. The $7,000 ..

Calculate the mean median mode and variance : Calculate the mean, median, mode, variance, and standard deviation for both the sample and the population. For the population mean construct the 95% confidence interval

Determine the angular velocity of rotation : A horizontal force of magnitude 6.5 N is exerted tangentially on a Frisbee of mass 32 grams and radius 14.3 cm. Assuming the Frisbee, a uniform disk, is originally at rest and the force is exerted for 0.08 s, determine the angular velocity of rota..

Why might the information contained in the disclosure note : Why might the information contained in the disclosure note be useful to a financial analyst?

Evaluate the performance of the process : A manufacturer of 10 mm diameter ball bearings uses a process which, when operating properly, is calibrated to produce ball bearings with mean diameter μ = 10.00 mm and standard deviation σ = 0.10 mm. In order to evaluate the performance of the pr..

What is the magnitude of the force that the left hand needs : Assume the board to be in static equilibrium and that the board is symmetrical with the mass evenly distributed. What force does the right hand need to exert to keep the board in static equilibrium?

How much income tax currently payable would be saved : If the company decided to purchase an additional 10,000 units at $25 per unit at the end of the year, how much income tax currently payable would be saved?

Safety performance characterization program : The waiting time (in days) until the occurrence of a recordable safety incident in a certain company's manufacturing site is known to be an exponential random variable with unknown parameter β. As part of a safety performance characterization prog..

What is the relationship between vx and ax : In this picture the ball is moving around the origin in a circle and is affecting the graph. When it is moving the values change. what is the relationship between x and y and what is the relationship between x and vx.

User Account

All Pages