Based on Table $10\mathrm{.}2,$ how many observations should be taken on an operation for

which the annual activity is $750$ pieces and the cycle time is estimated at $15$min $?$Based on Table $10\mathrm{.}2,$ how many observations should be taken on an operation for

which the annual activity is $750$ pieces and the cycle time is estimated at $15$min $?$

Table $10\mathrm{.}2$ Recommended Number of Observation Cycles

Source: Information taken from the Time Study Manual of the Erie

Works of the General Electric Company, developed under the guid$-$

ance of Albert E$.$ Shaw, manager of wage administration.