(Solved): A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic bl ...

A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let \( d= \) (blood pressure before taking new drug)–(blood pressure after taking new drug). Use a significance level of \( \alpha=0.05 \) for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patients both before and after taking the new drug. Step 3 of 5: Compute the value of the test statistic. Round your answer to three decimal places.