Cholesterol Levels A medical researcher wishes to see if he can lower the cholesterol levels through diet in  6  people by showing a film about the effects of high cholesterol levels. The data are shown. At  α=0.01, did the cholesterol level decrease on average? Use the critical value method and tables.   Patient 1 2 3 4 5 6 Before 244 216 214 222 207 219 After 210 203 191 189 206 208   Compute the test value. Round intermediate calculations and final answers to at least three decimal places. t-value =

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