A child psychologist conducts a study to test whether infants born prematurely begin to walk earlier than do infants in general.Which of the following scenarios represents a Type II error?
A)The psychologist concludes that premature infants do walk earlier than infants in general when the true situation is that they actually do not.
B)The psychologist concludes that premature infants do walk earlier than infants in general when the true situation is that they actually do.
C)The psychologist concludes that premature infants do not walk earlier than infants in general when the true situation is that they actually do.
D)The psychologist concludes that premature infants do not walk earlier than infants in general when the true situation is that they actually do not.

Question

Quizplus · Accepted Answer

A Type II error is when the researcher concludes that there is no significant difference between two groups when in reality there is. In this scenario, a Type II error would occur if the psychologist concludes that premature infants do not walk earlier than infants in general, when in fact they do. Therefore, choice C is the correct answer.

A Child Psychologist Conducts a Study to Test Whether Infants