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

question 151

Short Answer

SCENARIO 8-13-A
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-DataA.XLSX. $$\begin{array} { l l l l l l l l l l } 495 & 499 & 502 & 500 & 491 & 498 & 498 & 495 & 488 & 516 \\513 & 486 & 504 & 503 & 493 & 504 & 489 & 500 & 495 & 499 \\501 & 507 & 511 & 496 & 486 & 497 & 510 & 504 & 493 & 482 \\511 & 502 & 520 & 514 & 486 & 514 & 500 & 505 & 512 & 500 \\504 & 498 & 503 & 514 & 474 & 489 & 488 & 506 & 517 & 490\end{array}$$ 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-A, the width of the 95% confidence interval for the mean number of
times the handles have been used to lift the bottles before they break is _____.

---

Definitions:

Revolving Door

The term "revolving door" is often used metaphorically to describe a situation where employees or members move between roles in an organization and positions in regulatory or oversight bodies, potentially leading to conflicts of interest.

Increased Homelessness

A rising phenomenon or trend where more individuals lack stable, permanent, and adequate nighttime residence.

Electroconvulsive Therapy (ECT)

A psychiatric treatment in which seizures are electrically induced in anesthetized patients for therapeutic effect, primarily in severe mood disorders.

Behavioural Treatment

A range of therapeutic interventions and techniques focused on modifying problematic behaviors and developing positive ones.