What is the value of ?(X - 2 ) for the following scores?? Scores: 2, 3, 5

Each time Mr. Chow hides 7-month-old Jana's doll under her blanket, she retrieves the toy. When Mr. Chow then hides the doll under a pillow near the blanket, Jana continues to look under the blanket for the doll. Jana is demonstrating

A) the secondary circular reaction. B) habituation and recovery. C) displaced reference. D) the A-not-B search error.

If we examine an Fobt and fail to reject H0,

a. we must conduct post hoc testing. b. we must compare means. c. we must not compare means. d. we must rerun the study.