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A movie critic wanted to determine whether or not moviegoers of different age groups evaluated a movie differently. With this objective, he commissioned a survey that asked people their ratings of their most recently watched movies. The rating categories were:
1 = terrible.
2 = fair.
3 = good.
4 = excellent.
Each respondent was also asked to categorise his or her age as either:
1 = teenager.
2 = young adult (20-34).
3 = middle age (35-50).
4 = senior (over 50).
The results are shown below.
Do these data provide sufficient evidence to infer at the 5% significance level that there were differences in ratings among the different age categories?
Pavlovian Conditioning
A form of learning in which a neutral stimulus comes to elicit a response after being paired with a stimulus that naturally brings about that response.
Classical Conditioning
A conditioning technique where, through recurrent pairing of two stimuli, a reaction initially caused by the second stimulus is eventually caused by the first stimulus alone.
Species-Specific
Pertaining or unique to a particular species.
Preparedness
A predisposition to quickly learn certain types of behaviors or to associate specific stimuli with certain responses due to evolutionary pressures.
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