Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Cable Co. manufacturers cables for industrial customers. The industrial customers set the minimum requirement for breaking strength of cables as 285kg. The breaking strength of

Cable Co. manufacturers cables for industrial customers. The industrial customers set the minimum requirement for breaking strength of cables as 285kg. The breaking strength of cables produced by them is currently normally distributed with a mean of =298.32 kg and a standard deviation of a = 5.14 kg. Cable Co. recently made an investment in its manufacturing process for improving the breaking strength.

Assuming that the process mean and standard deviation have not changed by the investment, what is the mean of the sampling distribution for the sample mean X of 11= 32 cables? (Round to 2 decimal places)Assuming that the process mean and standard deviation have not changed by the investment, what is the standard deviation of the sampling distribution (ie., standard error) for the sample mean X of n = 32 cables? (Round to 2 decimal places)In order to evaluate whether the investment actually improved the breaking strength, Cable Co. randomly chose n=32 cables to measure the breaking strength and its sample mean was 300.37 kg. Assuming that the process mean and standard deviation have not changed by the investment, what is the likelihood of observing the sample mean of 300.37 kg? (Round to 4 decimal places)Based on the likelihood computed above, the investment indeed made an improvement in cable breaking strength.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Project management

Authors: Harvey maylor

4th Edition

027370432X, 978-0273704324

More Books

Students also viewed these General Management questions

Question

How might the banks research the market for retail customers?

Answered: 1 week ago