Rene Likert, staff analyst for the U.S. federal government, is in charge of a project to revise the training manual for first-line government supervisors. In order to inform his recommendations, Likert has taken a random sample of government workers and classified them according to two variables: whether they consider their supervisor supportive or non-supportive of their needs, and whether objective tests show that they rank in the bottom 50 percent or the top 50 percent of workers in productivity (low and high productivity, respectively). These data are cross-tabulated below. Rene believes that workers will be more productive if their supervisors are supportive rather than non-supportive. Analyze the cross-tabulation for Rene. Is there support for his hypothesis? To what extent?

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Supervisor Productivity Low High Non-Supportive Supportive 952 498 990 539