Chi Square problems

Chi Square problems - Chi-Square Problems 1 A developmental...

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Chi-Square Problems 1. A developmental psychologist would like to determine whether infants display any color preferences. A stimulus consisting of four color patches (red, green, blue, yellow) is projected onto the ceiling above a crib. Infants are placed in the crib one at a time and the psychologist records how much time each infant spends looking at each of the four colors. The color that receives the most attention during a 100- second test period is identified as the preferred color for that infant. The preferred colors for a sample of 60 infants are : Red:20; Green: 12; Blue: 18; Yellow: 10 Do the data indicate any significant preferences among the four colors? Test at the . 05 level of significance. 2. To investigate the phenomenon of “home team advantage”, a researcher recorded the outcomes from 64 college games on one Saturday in October. Of the 64 games, 42 were won by home teams. Does this result provide enough evidence to conclude that home teams win significantly more than would be expected by chance? Use alpha = .05?
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3. A professor in the psychology department would like to determine if there has
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This note was uploaded on 01/06/2012 for the course EDP 371 taught by Professor Pituch during the Fall '08 term at University of Texas.

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Chi Square problems - Chi-Square Problems 1 A developmental...

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