One possible reason that people may act differently while they're wearing costumes on Halloween is

Jaime, age 47, left her part-time job in retail, pursued a bachelor's degree in social work, and accepted a job as a child welfare worker. According to Levinson, Jaime is engaged in which of the following developmental tasks?

A) young–old B) destruction–creation C) masculinity–femininity D) engagement–separateness

If all the scores in a distribution are the same value, then the estimated population

variance of the scores will be _____ . a. 1.0 b. equal to the mean of the set c. zero d. cannot determine without knowing the number of scores in the set