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The average systolic blood pressure (SBP) for males aged 35-45 is 128. A study for a new medication wants to see if the medication will change the systolic blood pressure. What is the alternative/research hypothesis?

1) SBP with medication is greater than 128
2) SBP with medication equals 128
3) SBP with medication is less than 128
4) SBP with medication does not equal 128

Answer :

Final answer:

The alternative hypothesis for the study on the new medication's effect on systolic blood pressure (SBP) is that the SBP with medication does not equal 128 mmHg, indicating that the medication may cause a significant change in SBP in either direction. Therefore is the correct anwer is 4.

Explanation:

In research, the alternative hypothesis is a statement that indicates a change due to treatment or intervention. Considering that the average systolic blood pressure (SBP) for males aged 35-45 is known to be 128 mmHg, and the study seeks to determine if a new medication will change this SBP, the alternative hypothesis would be that the SBP with medication does not equal 128 mmHg. This includes possibilities of both increasing or decreasing the SBP from the known average. Therefore, the correct alternative hypothesis would be:

SBP with medication does not equal 128

The two-tailed hypothesis test is designed to evaluate if there is any significant change in either direction due to the new medication. Therefore is the correct anwer is 4.

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