1.

Variance of an activity may be written as:(where, tp = pessimistic time, to = optimistic time)

A. \({\left( {\frac{{{t_p} - {t_o}}}{6}} \right)^{1/2}}\)
B. \({\left( {\frac{{{t_p} - {t_o}}}{{12}}} \right)^2}\)
C. \({\left( {\frac{{{t_p} - {t_o}}}{6}} \right)^2}\)
D. \({\left( {\frac{{{t_p} - {t_o}}}{{12}}} \right)^{1/2}}\)
Answer» D. \({\left( {\frac{{{t_p} - {t_o}}}{{12}}} \right)^{1/2}}\)


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