The Head of a Computer Science Department Is Interested in Estimating

question 147

Short Answer

The head of a computer science department is interested in estimating the proportion of students entering the department who will choose the new computer engineering option.A preliminary sample indicates that the proportion will be around 0.25.Therefore,what size sample should the department head take if she wants to be 95% confident that the estimate is within 0.10 of the true proportion?

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Definitions:

Species

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding to produce fertile offspring.

Arachnida

A class of joint-legged invertebrate animals in the arthropod phylum, including spiders, scorpions, ticks, and mites.

Insecta

The class of arthropods that includes insects, characterized by a three-part body, compound eyes, antennae, and, typically, two pairs of wings.

Exoskeleton

An external skeleton, such as the shell of mollusks or outer covering of arthropods; provides protection and sites of attachment for muscles. Compare with endoskeleton.