Please letter c and d please!!

3. A sample was collected from a vanilla bean grinder and the following particle sizes were measured. Ideally, we would like to have very uniformly sized particles so that the vanilla is extracted from all the particles at the same rate. Particle Size (microns) a) Insert the table into Excel and use an appropriate Excel function to determine the number of particles in the sample. b) Using built in functions have Excel determine the average, standard deviation, maximum, and minimum particle size. Is the standard deviation less than 15 microns? If not, then the grinder needs to be sent out for repair. c) What is the probablility that particles less than or equal to 120 microns will occur? d) What is the probability that particles between 100 microns and 120 microns will occur