In an analysis of variance with a between-groups population variance estimate of 30 and a within-groups estimate of 25, the F ratio is

A) 25 / (30–25) = 5.00
B) (30–25) /30 = 0.17
C) 25/30 = 0.83
D) 30/25 = 1.20


D

Psychology

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People tend to overestimate how easily others can understand the intended meaning of their e-mail messages. Misunderstood message meanings are often caused by the lack of _____

Fill in the blank with correct word

Psychology

Felix is a Native American boy being raised by his grandmother. Which statement below reflects Felix's experience?

A. Felix is in the minority of Native American children because most are raised by single mothers. B. Felix will experience negative outcomes such as behavior problems and substance abuse. C. Felix is in the majority of Native Americans because up to 60% of children in Indian tribes are raised by grandparents. D. Felix is more likely to jump from his grandmother's home to his parents' home and back again.

Psychology

When parents see something in a child, such as early vocalization, and respond to it with, for example, extra time vocalizing to the child, this is a ____________ genotype-environment correlation

a. reactive b. passive c. logical d. respondent

Psychology

Which of the following is thought to be important specifically to formation of new learning?

a. hippocampus b. amygdala c. hypothalamus d. optic nerve

Psychology