Stats28 Essay Example | Topics and Well Written Essays - 1500 words

Stats28 - Essay Example The correlation between amount of TV with violent content and amount of violent behavior is an example of ____. 2. For each of the following, determine whether the sample provides enough evidence to conclude that there is a significant, nonzero correlation in the population.   In each case, use a two-tailed test with ÃŽ ± = .05. For a two-tailed test with ÃŽ ± = .05, critical value of r with df = 16 is  ±0.468. r = -0.50 is less than -0.468. Thus, the sample provides enough evidence to conclude that there is a significant, nonzero correlation in the population.   For a two-tailed test with ÃŽ ± = .05, critical value of r with df = 13 is  ±0.514. r = -0.50 is greater than -0.514. Thus, the sample does not provide enough evidence to conclude that there is a significant, nonzero correlation in the population.   For a two-tailed test with ÃŽ ± = .05, critical value of r with df = 28 is  ±0.361. r = -0.375 is less than -0.361. Thus, the sample provides enough evidence to conclude that there is a significant, nonzero correlation in the population.   For a two-tailed test with ÃŽ ± = .05, critical value of r with df = 23 is  ±0.396. r = -0.50 is less than -0.396. Thus, the sample provides enough evidence to conclude that there is a significant, nonzero correlation in the population.   4. A professor obtains SAT scores and freshman grade point averages (GPAs) for a group of n = 15 college students.   The SAT scores have a mean of M = 580 with SS = 22,400, and the GPAs have a mean of 3.10 with SS = 1.26, and SP = 84. a.   A geneticist might wonder if there is a tendency for tall fathers to have tall sons and short fathers to have short sons.   Answer this question by computing the appropriate statistic and testing it for statistical significance.   (Hint:   The statistic will be much easier to compute if you subtract 40 from each of the scores.   Doing so will not affect the value of the