What is your effect size?
The owner of a chain of five retail stores wishes to compare the number of shoplifter apprehensions in her stores for a 1-month period prior to the installation of a new security system to the number of apprehensions in the same stores for a 1-month period after the security system was in place. The new system is much more expensive than the old system, and she doesn’t want to spend the extra money unless the new security system is better than the old system. The apprehension data are as follows:
Ans: d = -0.97
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Answer the following statement true (T) or false (F)
If you’re doing a one-way, between-subjects ANOVA, and you find that F = 1, then:
a. the sample means must be equal b. the sample variances must be equal c. the population means must be equal d. the sample standard deviations must be equal
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a. Was characterized by de jure segregation. b. Was viewed as primarily the responsibility of parents or the Catholic Church. c. Improved greatly after the turn of the twentieth century. d. Was hampered by the views of the larger society that Mexican Americans were mentally inferior.
When planning the physical arrangement of the classroom, teachers should
a. consider objectives, cultural diversity, and student disabilities. b. arrange the desks in rows to maximize student learning. c. arrange the desks in clusters to encourage group work and collaboration. d. isolate students with behavior problems.