A pharmaceutical company believes a new drug will lower LDL cholesterol levels. A group of 40...

    

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A pharmaceutical company believes a new drug will lower LDL cholesterol levels. A group of 40 people with high LDL cholesterol levels (above 240 mg/dL) are to be given the new drug for a trial period, but make no lifestyle changes. Below is the data for LDL levels before and after the trial. LDL Levels in mg/dL Before Trial After Trial Difference Before Trial After Trial Difference Before Trial After Trial Difference Before Trial After Trial Difference 245 249 256 260 245 253 245 0 249 250 255 241 247 254 255 242 251 246 249 252 240 -1 -3 -1 -2 -2 -5 -3 -2 -3 254 241 249 -5 248 252 244 251 252 3 3 0 260 248 247 244 262 251 243 244 2 3 -4 0 257 260 248 243 256 253 262 2 250 241 251 2 -2 -5 -4 247 257 257 260 257 253 0 248 256 -4 1 -4 243 241 -2 247 246 243 242 -4 -4 257 256 259 254 2 243 260 244 257 1 -3 254 257 247 254 252 245 0 -5 -2 255 251 -2 -4 -3 241 247 238 248 1 Show there is evidence that the drug lowers LDL levels. (Do a significance test on the differences. Remember all the requirements for a significance test a. b. If this drug is expensive, comment on the practicality of using this drug to lower IDL cholesterol levels. I A pharmaceutical company believes a new drug will lower LDL cholesterol levels. A group of 40 people with high LDL cholesterol levels (above 240 mg/dL) are to be given the new drug for a trial period, but make no lifestyle changes. Below is the data for LDL levels before and after the trial. LDL Levels in mg/dL Before Trial After Trial Difference Before Trial After Trial Difference Before Trial After Trial Difference Before Trial After Trial Difference 245 249 256 260 245 253 245 0 249 250 255 241 247 254 255 242 251 246 249 252 240 -1 -3 -1 -2 -2 -5 -3 -2 -3 254 241 249 -5 248 252 244 251 252 3 3 0 260 248 247 244 262 251 243 244 2 3 -4 0 257 260 248 243 256 253 262 2 250 241 251 2 -2 -5 -4 247 257 257 260 257 253 0 248 256 -4 1 -4 243 241 -2 247 246 243 242 -4 -4 257 256 259 254 2 243 260 244 257 1 -3 254 257 247 254 252 245 0 -5 -2 255 251 -2 -4 -3 241 247 238 248 1 Show there is evidence that the drug lowers LDL levels. (Do a significance test on the differences. Remember all the requirements for a significance test a. b. If this drug is expensive, comment on the practicality of using this drug to lower IDL cholesterol levels. I

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We can use a significance test on the differences between LDL levels before and after the trial to see if there is evidence that the drug lowers LDL l... View the full answer