SCENARIO 8-13-B
You Are the Quality Control Manager of a Water

question 34

True/False

SCENARIO 8-13-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
bottle to 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 Scenario8-13-DataB.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 the population standard deviation is 5 and the number of times the handles have been
used to lift the bottles before they break follows a normal distribution.
-Referring to Scenario 8-13-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:

Psychological Abnormality

A deviation from behavioral, cognitive, or emotional norms, often leading to distress or impaired functioning.

Post-Traumatic Stress Disorder

A mental health condition triggered by experiencing or witnessing a traumatic event, characterized by flashbacks, nightmares, severe anxiety, and uncontrollable thoughts about the event.

Acute Stress Disorder

A condition characterized by the development of severe anxiety, dissociation, and other symptoms occurring within a month after exposure to a traumatic event.

Panic Disorder

A mental health condition characterized by sudden and repeated episodes of intense fear accompanied by physical symptoms such as chest pain, heart palpitations, shortness of breath, dizziness, or abdominal distress.