Absenteeism A High School Band Teacher Has a Record of Each

question 87

Short Answer

Absenteeism
A high school band teacher has a record of each student's absence. The results, in days, are 3, 4, 7, 2, 2, 1, 0, 0, 1, 0, 3, 3, 2, 1, 6, 0, 1, 0, 1, 1, 1, 5, 3, 1, 1, 0, 0, 2, 1, 2, 1, 0, 0, and 4.
-Refer to the Absenteeism statement. What proportion of students has been absent less than three days?

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Definitions:

Population Variance

The average of the squared differences from the Mean, describing the variation of the entire population.

Normally Distributed

Describes a bell-shaped frequency distribution that is symmetrical about the mean, indicating that data near the mean are more frequent in occurrence than data far from the mean.

Sample Size

The number of observations or data points collected in a study or used to represent a larger population.

Confidence Interval

A range of values that is likely to contain a population parameter, estimated from a sample data with a given level of confidence.