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A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...

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? 0.05 for the test. Assume that the systolic Let d = (blood pressure before taking new drug-blood pressure after taking new drug. Use a significance level of ? blood pressure levels are normally distributed for the population of patients both before and after taking the new drug Patient Blood pressure (before) 158 189 Blood pressure (after)152 178 186 172 176 186 172 140 14:3 196 185 200 202 19 160 161 Copy Data Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.

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