Use the Normal Approximation to the Binomial Distribution to Answer

question 109

Multiple Choice

Use the normal approximation to the binomial distribution to answer this question. Eleven percent of all students at a large university are absent on Mondays. If a random sample of 12 names is called on a Monday, what is the probability that four students are absent?

• A) 0.0285
• B) 0.9935
• C) 0.0065
• D) 0.9715

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Definitions:

Quota Sampling

A sampling procedure in which the sample is chosen to reflect the numerical composition of various subgroups in the population. A haphazard sampling technique is used to obtain the sample.

Social Class

A division of a society based on social and economic status, affecting access to resources and opportunities.

Sample Size

The number of subjects or observations included in a sample selected from a population for the purpose of a statistical study.

Confidence Interval

An interval of values within which there is a given level of confidence (e.g., 95%) where the population value lies.