SCENARIO 8-2 A Quality Control Engineer Is Interested in the Mean Length

question 150

Short Answer

SCENARIO 8-2
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine.The desired mean length of the insulation is 12 feet.It is known that the standard deviation in the cutting length is 0.15 feet.A sample of 70 cut sheets yields a mean length of 12.14 feet.This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
-Referring to Scenario 8-2,the critical value to use in obtaining the confidence interval is .

---

Definitions:

Sales Clerk

An employee who handles the exchange of goods for payment, typically in a retail setting, assisting customers in finding products and completing purchases.

Daily Sales

The total revenue generated from goods or services sold by a company during a single day.

Static Budget

A fixed budget that does not change with actual activity levels, designed for planning purposes.

Flexible Budget

A budget that adjusts or flexes with changes in volume or activity, providing a more useful tool for performance evaluation.