QUESTION $2$

Some observations have been liken on a hesad baker fox a school district. The mumencal breakdown of the baker's actwhes is Make Resady $(6).$ Do $(8),$ Clean Up $(4),$ Idle $(5)$ Basext on this infomiation, how many work samplimg obervalicris iare requied to determine how much of the baker's time is spent in "make ready"? Assume a $7$ percent desired absolute accuracy and $95$ percent confidence level