A Manufacturer Wants to Estimate the Proportion of Defective Items

question 68

Multiple Choice

A manufacturer wants to estimate the proportion of defective items that are produced by a certain machine. A random sample of 50 items is selected. Which Excel function would NOT be appropriate to construct a confidence interval estimate?

• A) NORM.S.INV
• B) COUNTIF
• C) STDEV
• D) All of these answers are correct.

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Definitions:

Depression

A mood disorder characterized by prolonged feelings of sadness and loss of interest in daily activities.

Laziness

A disinclination to activity or exertion despite having the ability to act or exert oneself.

Distractions

External or internal factors that divert an individual's attention away from their intended focus, potentially reducing the efficiency of cognitive tasks or activities.

Explanatory Style

A psychological attribute that indicates how people explain to themselves why they experience a particular event, either positively or negatively.