Many drugs used in treating schizophrenia block the reception of dopamine by neurons. (Dopamine is a neurotransmitter, which, when released by the axons of one nerve, inhibits the firing of the next nerve.)This fact led to the idea that schizophrenia occurs when too much dopamine is produced. Suppose the following data on dopamine production were obtained. Schizophrenics Control Group 42 33 31 27 29 18 The effect size index for Data Set 10-6 is a.0.78 b.2.58 c.1.55 d. none of the other alternatives are correct; answer is ___ e.0.26