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

question 86

True/False

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, a 99% 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.

---

Definitions:

Perception

The process by which individuals organize and interpret their sensory impressions to give meaning to their environment.

Sensory Impulses

Electrical signals that are generated by sensory receptors in response to a stimulus, and then transmitted to the brain for interpretation.

Mental Operations

Cognitive processes that involve manipulating information mentally, such as reasoning, problem-solving, and decision-making.

Electrical Impulses

Rapid signals transmitted along neurons, facilitating communication within the brain and between the brain and the rest of the body.