The Mean Crying Time of Infants During Naptime at a Local

question 70

Multiple Choice

The mean crying time of infants during naptime at a local preschool is 12 min.The school implements a new naptime routine in a sample of 25 infants and records an average crying time of 8±4.6 (M±SD) min.Test whether this new naptime routine reduced crying time at a .05 level of significance.

• A) The new naptime routine significantly reduced crying time, t(24) = -4.35, p < .05.
• B) The new naptime routine did not reduce crying time, t(24) = -4.35, p < .05.
• C) The new naptime routine did not reduce crying time, t(24) = 8.67, p > .05.
• D) The new naptime routine significantly reduced crying time, t(24) = 8.67, p < .05.

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Definitions:

Unilateral Contract

A unilateral contract is a legally binding agreement where one party promises to do something in return for an act of the other party, who is not legally obligated to act.

Consideration

in contract law, refers to something of value given by both parties to a contract that induces them to enter into the agreement to exchange mutual performances.

Merchant

An individual or company engaged in the business of buying and selling goods or services with the intent of making a profit.

Insanity

A mental disorder so severe that it prevents someone from having legal capacity or from being held responsible for their actions, often used as a defense in criminal trials.