You Have Been Asked to Observe the Shift Supervisor at the Process

question 111

Short Answer

You have been asked to observe the shift supervisor at the process test plant for Hudson Chemical Co. to estimate the proportion of time she spends answering questions for the operators. Your 30 observations have revealed the following:

(a) Based on the preliminary data, calculate the proportion of time she spends answering questions for the operators.
(b) Calculate the sample size needed to estimate the proportion of time she spends answering questions for the operators. Assume a 90% confidence that the results will lie within 5% of the true value.

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Definitions:

Flushed

Sudden reddish coloration of the skin.

Frostbite

A condition where localized damage is caused to skin and other tissues due to extreme cold.

Heatstroke

A severe condition caused by impairment of the body’s temperature-regulating abilities, resulting from prolonged exposure to excessive heat and characterized by cessation of sweating, severe headache, high fever, hot dry skin, and in serious cases collapse and coma.

Coma

An abnormal deep stupor from which a person cannot be aroused by external stimuli.