A Time Study of a Certain Service Task Found an Average

question 310

Essay

A time study of a certain service task found an average time of 15 minutes, with a standard deviation of 3 minutes. These figures were based on a sample of 100 measurements. Is the sample large enough that we are 95% confident that standard time is within ±5% of its true value?

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Definitions:

Competitive Or Ambitious

Describes individuals or behaviors driven by the desire to succeed or excel over others.

Easy-Going

Describes a person who is relaxed, tolerant, and not easily upset or stressed.

Inferiority Feelings

Emotions characterized by a lack of self-worth or a perception of being less valuable or capable in comparison to others.

Later-Borns

Individuals born later in the birth order of a family, who may experience different developmental dynamics than firstborns.