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 I 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

In this scenario, the psychologist concludes that premature infants do walk earlier than infants in general when the true situation is that they actually do not. This is known as a Type I error, which is when a true null hypothesis is rejected (in this case, that premature infants do not walk earlier than infants in general) in favor of a false alternative hypothesis (that premature infants do walk earlier than infants in general).

A Child Psychologist Conducts a Study to Test Whether Infants