Instruction 8-3 A Quality Control Engineer Is Interested in the Mean Length

question 13

Short Answer

Instruction 8-3
A quality control engineer is interested in the mean length of timber poles being cut automatically by machine.The desired length of the insulation is 12 metres.It is known that the standard deviation in the cutting length is 0.15 metres.A sample of 70 cut poles yields a mean length of 12.14 metres.This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
-Referring to Instruction 8-3,the confidence interval goes from ________ to ________.

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Definitions:

Seller Ratings

Evaluations or scores given to sellers on e-commerce platforms, based on the quality of their products, shipping speed, and customer service.

Moral Hazard

A situation where one party is more likely to take risks because another party bears the cost of those risks, often seen in insurance and financial sectors.

Federal Deposit

Funds deposited in a federal bank or a financial institution that is guaranteed by a government agency.

Insurance Program

A system of protection against financial loss in which risks are pooled and financial compensation is provided to members facing losses.