A Population Has a Mean of 84 and a Standard

question 122

Multiple Choice

A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that the sample mean will be between 80.54 and 88.9 is

• A)0.0347
• B)0.7200
• C)0.9511
• D)8.3600

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Definitions:

Secondary Circular Reactions

The behavior characteristic of the third substage of Piaget’s sensorimotor stage, in which babies repeat actions to produce interesting changes in their environment.

Mental Symbols

are cognitive representations of reality that allow for complex thought processes, including language, mathematical symbols, and images.

SIDS

Sudden Infant Death Syndrome, the unexplained death, usually during sleep, of a seemingly healthy baby less than a year old.

Tummy Time

A practice where infants are placed on their stomachs while awake to help strengthen their neck and shoulder muscles and promote motor skills.