A random sample of patient records from a large medical facility were taken and subjects were classified by smoking status and cholesterol levels. The results are summarized in the table with observed counts next to expected values in parentheses followed by the Chi-square component for each cell in brackets. Cholesterol Level Never Smoked 80 (68.86) [1.80] 49 (48.55) [0.00] 28 (39.59) [3.40] 157 Low Moderate High Totals Smoking Status Former Smoker 63 (63.16) [0.00] 37 (44.53) [1.27] 44 (36.32) [1.63] 144 Current Smoker 57 (67.98) [1.77] 55 (47.93) [104] 43 (39.09) [0.39] 155 Totals 200 141 115 456

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A random sample of patient records from a large medical facility were taken and
subjects were classified by smoking status and cholesterol levels. The results are
summarized in the table with observed counts next to expected values in
parentheses followed by the Chi-square component for each cell in brackets.
Cholesterol Level Never Smoked
80 (68.86) [1.80]
49 (48.55) [0.00]
28 (39.59) [3.40]
Totals 157
Low
Moderate
High
Smoking Status
Former Smoker
63 (63.16) [0.00]
37 (44.53) [1.27]
44 (36.32) [1.63]
144
Current Smoker
57 (67.98) [1.77]
55 (47.93) [104]
43 (39.09) [0.39]
155
Totals
200
141
115
456
Based on the results of your mechanics, what conclusion could the researchers make
at a 1% level of significance?
Transcribed Image Text:A random sample of patient records from a large medical facility were taken and subjects were classified by smoking status and cholesterol levels. The results are summarized in the table with observed counts next to expected values in parentheses followed by the Chi-square component for each cell in brackets. Cholesterol Level Never Smoked 80 (68.86) [1.80] 49 (48.55) [0.00] 28 (39.59) [3.40] Totals 157 Low Moderate High Smoking Status Former Smoker 63 (63.16) [0.00] 37 (44.53) [1.27] 44 (36.32) [1.63] 144 Current Smoker 57 (67.98) [1.77] 55 (47.93) [104] 43 (39.09) [0.39] 155 Totals 200 141 115 456 Based on the results of your mechanics, what conclusion could the researchers make at a 1% level of significance?
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