Save Homework: Section 9-4 HW 7 of 8 (7 complete) E Question Help When subjects

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Save Homework: Section 9-4 HW 7 of 8 (7 complete) E Question Help When subjects were treated with a drug, their systolic blood pressure readings (in mm Hg)were measured before and after the drug was taken. Results are given in the table below. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Using a 0.01 significance level, is there sufficient evidence to support the claim that the drug is effective in lowering systolic blood pressure? Before 169 89 204 82 55 205 99 157 195 209 Afte 186 55 88 56 143 60 76 63 66 Identity the test statistic. t L Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. parts Clear All Check Answer remaining 2:41 AM a fr One Drive Desktop A F Search the web and Windows 5/1/2017

Explanation / Answer

t =2.0770

P value=0.062 (SUng t tables)

Before After d=x-y 159 186 -27 189 155 34 204 188 16 182 175 7 155 156 -1 205 143 62 199 160 39 157 152 5 167 177 -10 195 176 19 159 163 -4 209 166 43 d bar 15.25 std= 25.43485 n= 12 t critical= 2.200985

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