Psychologists tend to believe that there is a relationship between aggressiveness and order of birth. To test this belie

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Psychologists Tend To Believe That There Is A Relationship Between Aggressiveness And Order Of Birth To Test This Belie 1 (58.74 KiB) Viewed 33 times

Psychologists tend to believe that there is a relationship between aggressiveness and order of birth. To test this belief, a psychologist chose 500 elementary school students at random and administered each a test designed to measure the student's aggressiveness. Each student was classified according to one of four categories. The number of students falling in the four categories are shown here. Aggressive Not Aggressive O2/5 None of the above O 3/10 Firstborn If one student is chosen at random from the 500, what is the probability that the student is firstborn? 3/25 I 60 140 Not Firstborn 90 210