SCENARIO 8-12-B
You Are the Quality Control Manager of a Water

question 87

True/False

SCENARIO 8-12-B
You are the quality control manager of a water bottles company. One of the biggest complaints in the
past years has been the breakage and, hence, the concern on the durability of the connector between
the lid and the bottle which many users use as a handle for the bottles. To collect evidence before
implementing any modification to the production process, your department has subjected 50 water
bottles to a durability test and the following data on the number of times the handles have been used
to lift the bottles before they break are contained in the file SCENARIO 8-12-B.XLSX. $$\begin{array} { l l l l l l l l l l } 493 & 506 & 515 & 491 & 500 & 505 & 517 & 510 & 506 & 503 \\503 & 491 & 495 & 496 & 496 & 505 & 493 & 486 & 504 & 483 \\514 & 494 & 497 & 501 & 493 & 490 & 510 & 494 & 494 & 495 \\494 & 486 & 495 & 506 & 506 & 507 & 502 & 498 & 510 & 501 \\500 & 505 & 492 & 486 & 501 & 496 & 501 & 521 & 510 & 498\end{array}$$ Assume that and the number of times the handles have been used to lift the bottles before they break
follows a normal distribution.
-Referring to Scenario 8-12-B, a 90% confidence interval for the mean of the
population from the same sample would be wider than the 95% confidence interval for the mean
number of times the handles have been used to lift the bottles before they break.

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Definitions:

Unused Capacity

The available production or service facility that is not being used or is underutilized.

Fixed Overhead

Expenditures that are unaffected by changes in production or sales volume, including rental fees, employee salaries, and insurance premiums.

Job-Order Costing

An accounting method that assigns costs to specific production batches or jobs, useful in industries where goods or services are custom-produced.

Automated Shaper

A machine tool operated using automation for shaping wood, metal, or other materials, enhancing precision and productivity.