In a Local University, 40% of the Students Live in the Dormitories.A

question 48

Multiple Choice

In a local university, 40% of the students live in the dormitories.A random sample of 80 students is selected for a particular study.The probability that the sample proportion (the proportion living in the dormitories) is at least 0.30 is

• A) 0.4664
• B) 0.9328
• C) 0.9664
• D) 0.0336

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Definitions:

Confidence Interval

A selection of values, taken from data sampling, that is presumed to hold the value of a hidden population attribute.

Sample Size

The number of observations or data points collected or selected from a population for the purpose of statistical analysis.

Degrees of Freedom

The number of independent pieces of information in a dataset that are available for estimating another piece of information or parameter.

Confidence Interval

A band of values, derived from the statistical examination of samples, presumed to include the value of an unascertained population parameter.