Many people have high anxiety about visiting the dentist. Researchers want to know if this affects blood pressure (B.P.) in such a way that the mean blood pressure whil waiting to see the dentist is higher than it is an hour after the visit. Ten individuals have their systolic blood pressure measured while they are in the dentist's waiting room and again an hour later after the conclusion of the visit to the dentist. The dat are as follow: RD ro: 122 125 140 122 110 121 129 122 110 110

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