The Mean Crying Time of Infants During Naptime at a Local

question 36

Multiple Choice

The mean crying time of infants during naptime at a local preschool is 12 minutes.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) minutes.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)= 0.92,p > .05.
• D)The new naptime routine significantly reduce crying time,t(24)= 0.92,p < .05.

Understand the differences in physical development and strength between boys and girls during adolescence.

Recognize the sequence and implications of puberty and adolescent growth spurts across sexes.

Comprehend the physiological changes in the brain during adolescence and their impact on behavior.

Identify the role of primary and secondary sexual characteristics in human development.

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Definitions:

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter with a specified level of confidence.

Margin Error

The amount of error that one can expect in an estimate, often expressed as a plus-or-minus figure and used in statistical analysis to indicate confidence in results.

Confidence Level

The probability percentage that specifies how reliable a confidence interval is in statistical analysis.

Normal Distribution

A symmetric probability distribution characterized by a bell-shaped curve, where the mean, median, and mode of the distribution are equal.