There are $7$ tasks and $5$ observations for each tasks. If the observation value is $50\%$ more than the

mean of this tasks, that observation is eliminated and rest of the observations will be used.

Table $1.$ Observed times for the given process

a$.$ Calculate the number of sample sizes for work element$-1$ and work element$-2.$ Is the number

of observations enough for each work element? $(10$ points$)$

b$.$ Calculate the total allowance rate using the following table. Assume that the following

situation is observed by the method engineer: $$Average$$ skill, $$Good$$ Efforts, $$Ideal$$

condition, and $$Excellent$$ consistency. $(5$ points