Sensitivity is the proportion of patients with disease who test positive. In probability notation: P(T+|D+) = TP / (TP+FN). Specificity is the proportion of patients without disease who test negative. In probability notation: P(T-|D-) = TN / (TN + FP). Pretest Probability is the estimated likelihood of disease before the test is done. It is the same thing as prior probability and is often estimated.
Billed as An Aquarian Exposition: 3 Days of Peace & Music, it was held at Max Yasgur's 600-acre (240 ha; 0.94 sq mi) dairy farm in the Catskills near the hamlet of White Lake in the town of Bethel. Bethel, in Sullivan County, is 43 miles (69 km) southwest of the town of Woodstock, New York, in adjoining Ulster County.
The Woodstock festival didnât take place on Max Yasgurâs dairy farm. The festival actually happened on one of his hay fields about three miles from his home farm. Max had the largest dairy operation in Sullivan County at the time, and he owned several tracts of land for his cattle and for growing hay for feed.