The Mean Number of Travel Days Per Year for the Outside

question 65

Multiple Choice

The mean number of travel days per year for the outside salespeople employed by hardware distributors is to be estimated. The 0.90 degree of confidence is to be used. The mean of a small pilot study was 150 days, with a standard deviation of 14 days. If the population mean is to be estimated within two days, how many outside salespeople should be sampled?

• A) 134
• B) 452
• C) 511
• D) 2,100
• E) None of the choices are correct

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Definitions:

Problematic Adjustment

Problematic adjustment refers to difficulties or challenges in adapting to new or changing circumstances, environments, or roles, often resulting in stress or dysfunction.

Independence

The state or quality of being self-reliant and autonomous, often associated with making decisions without external influence.

Working Mother

A mother who engages in employment outside the home in addition to her family responsibilities.

Better-Adjusted Children

Children who have adapted well to their environment and situations, often displaying good social and emotional development.