The Following Data Was Collected from a Simple Random Sample

question 90

Multiple Choice

The following data was collected from a simple random sample of a population of college freshmen. It represents their ages on the first day of the fall semester. 17 21 19 18 18 19
The point estimates of the population mean and standard deviation are:

• A) 18 and 1.75.
• B) 19 and 1.78.
• C) 17.67 and 1.63.
• D) 18.67 and 1.36.

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Definitions:

Preventive Maintenance

Scheduled maintenance activities conducted on equipment before faults occur in order to prevent breakdowns and minimize downtime.

Redundancy

The use of components in parallel to raise reliability.

Infant Mortality

Infant mortality is the statistical measure of the number of deaths of infants under one year old per 1,000 live births.

Reliability

The degree to which a system, component, or process performs its required functions under stated conditions for a specified period of time.