A medical researcher wishes to see if he can lower the cholesterol levels through diet in 6

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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 = 0.05, did the cholesterol level decrease on average?

1 3 5 6. Patient 222 206 219 Before After 243 215 216 202 214 198 195 204 213

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