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

question 148

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 not
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:

Typical Urban Family

A typical urban family refers to an average or standard family living in an urban area, often used in studies to assess living conditions, expenses, and economic impacts in city environments.

Intermediate Goods

Goods used to produce other goods.

Consumer Price Index

A gauge that tracks the overall variation in prices urban consumers pay for a selection of consumer products and services over a period.

Base Year

A reference year used in economics for comparative purposes, allowing the calculation of index numbers or real values.