A Large Midwestern University Is Interested in Estimating the Mean

question 36

Multiple Choice

A large Midwestern university is interested in estimating the mean time that students spend at the student recreation center per week. A previous study indicated that the standard deviation in time is about 40 minutes per week. If the officials wish to estimate the mean time within ± 10 minutes with a 90 percent confidence, what should the sample size be?

• A) 44
• B) 62
• C) 302
• D) Can't be determined without knowing how many students there are at the university.

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Definitions:

Assimilation

The cognitive process in which new information is absorbed and integrated into pre-existing knowledge structures and frameworks.

Sensorimotor Stage

The first of Piaget's stages of cognitive development, spanning from birth to about 2 years, where infants learn about the world primarily through sensory experiences and manipulating objects.

First Birthday

Marks the completion of one year since a child's birth, a significant milestone in development and growth often celebrated by families and caregivers.

Halfway Through

A term indicating that a process or period of time has reached its midpoint, with an equal amount completed and remaining.