Provide a 95% confidence interval for the correlation coefficient between these two measures of reactivity?

Hypertension

Refer to the data in Table 3.11 (on p. 69). Another method for relating measures of reactivity for the automated and manual blood pressures is the correlation coefficient. Suppose the correlation coefficient relating these two measures of reactivity is .19, based on 79 people having reactivity measured by each type of blood-pressure monitor.

Table 3.11 Classification of cardiovascular reactivity using an automated and a manual sphygmomanometer

 

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ADBP, manual ADBP, automated <10 210 51 <10 15 210