a) The pertert of time Bob is working =69.29 \% (enter your response as a pertolitage rounded to two decimal placed). b) The number of observelons that naed to be taken of Bob to be 905 conkdent wath 5% anceptabin emor = pround jour miponie to the menedibe higher ahole nimbed, observatens. (Round all intermediate cakculations to at ieast two decimal places before proceeding with further calculations) a) The percent of time Bob is woking * 80.29 \% (enter your respanae as a percertage roundeg ta twe decimal placed)