The accompanying two-way table was constructed using data from an article. The a

Question

The accompanying two-way table was constructed using data from an article. The author hoped to determine whether time spent watching television is associated with cardiovascular fitness. Subjects were asked about their television-viewing habits and were classified as physically fit if they scored in the excellent or very good category on a step test. We include Minitab output from a chi-squared analysis. The four TV groups corresponded to different amounts of time per day spent watching TV (0, 1–2, 3–4, or 5 or more hours). The 168 individuals represented in the first column were those judged physically fit. Expected counts appear below observed counts, and Minitab displays the contribution to 2 from each cell.

State the rejection region and compute the test statistic value. (Round your answers to three decimal places.)

1 2 Total 1 35 148 183 25.41   157.59 2 101 638 739   102.60 636.40 3 28 222 250 34.71 215.29 4 4 34 38 5.28 32.72 Total 168 1042 1210 ChiSq = 3.621 + 0.584 +
        0.025 + 0.004 +
        1.297 + 0.209 +
        0.309 + 0.050 = 6.099 df = 3

Explanation / Answer

Rejection region

2 7.815

test Statistic 2 = 6.099

2 7.815

test Statistic 2 = 6.099

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