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

question 180

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, it is possible that the mean of the population will fall
between the computed lower and upper limit of 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:

Larger Stadium

A sports or event venue with a larger capacity for accommodating more spectators.

Consumer Advocacy

The act of protecting consumers' interests, especially by lobbying for rights and standards in the goods and services offered to them.

Mean Temperature

The average temperature calculated over a specified time period, typically derived by summing the temperatures over that period and dividing by the number of measurements.

Refrigerators

Appliances used for keeping food and drinks cold, they work by removing heat from the interior and expelling it to the environment outside.