Question
To see If fish oil can help reduce blood pressure, males with high blood pressure were recruited and randomly assigned different treatments. Seven of the
To see If fish oil can help reduce blood pressure, males with high blood pressure were recruited and randomly assigned different treatments. Seven of the men were randomly assigned to a 4-week diet that included fish oil. Seven other men were assigned to a 4-week diet that included a mixture of oils that approximated the types of fat in a typical diet. At the end of the 4-weeks, each volunteer's blood pressure was measured again and the reduction in diastolic blood pressure was recorded.
The average reduction for the fish oil group was 6.57 and the average reduction for the regular oil group was - 1.14. The p-value for the appropriate test is 0.007.
Which of the following is the best interpretation of the p-value?
A) Assuming the fish oil is better than the mixture of oils for reducing blood pressure, there is a 0.007 probability of getting a difference of sample means of 7.71 or more by chance alone.
B) Assuming the fish oil is better than the mixture of oils for reducing blood pressure, there is a 0.007 probability of getting a difference of sample means of 0 or more by chance alone.
C) Assuming the fish oil is better than the mixture of oils for reducing blood pressure, there is a 0.007 probability of finding convincing evidence that the fish oil is better.
D) Assuming the fish oil is equally effective as the mixture of oils for reducing blood pressure, there is a 0.007 probability of getting a difference of sample means of 7.71 or more by chance alone.
E) Assuming the fish oil is equally effective as the mixture of oils for reducing blood pressure, there is a 0.007 probability of getting a difference of sample means of 0 or more by chance alone.
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