The Mean Number of Travel Days Per Year for the Outside

question 97

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) 133
• B) 452
• C) 511
• D) 2,100

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Definitions:

Motor Cortex

The region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.

Catatonic Schizophrenia

A subtype of schizophrenia characterized by a range of motor abnormalities, from a complete lack of movement to excessive motor activity or extreme negativism.

Negative Symptoms

In psychiatry, symptoms that reflect an absence or lack of normal emotional responses, motivation, or behavior, such as apathy, anhedonia, and reduced social engagement, often associated with schizophrenia.

Psychomotor Symptoms

Disturbances in movement sometimes found in certain disorders such as schizophrenia.