The medical researcher is comparing two treatments for lowering cholesterol:  diet and meds.  The researcher wants to see if the patients who receive the recommendation to change their diet have equal success lowering cholesterol compared to a prescription of meds.  A random sample of some patients who received the recommendation to change their diet and others who were prescribed meds was taken.  The results of how many did or did not lower their cholesterol are shown below:   Diet Meds Yes 372 561 No 169 308 What can be concluded at the  = 0.10 level of significance?       The test statistic  z= (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)

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The medical researcher is comparing two treatments for lowering cholesterol:  diet and meds.  The researcher wants to see if the patients who receive the recommendation to change their diet have equal success lowering cholesterol compared to a prescription of meds.  A random sample of some patients who received the recommendation to change their diet and others who were prescribed meds was taken.  The results of how many did or did not lower their cholesterol are shown below:

  Diet Meds
Yes 372 561
No 169 308


What can be concluded at the  = 0.10 level of significance?

     

  1. The test statistic  z= (please show your answer to 3 decimal places.)
  2. The p-value = (Please show your answer to 4 decimal places.)
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