Dynamic random-access memory (DRAM) chips are routed through fabrication machines in an order that is referred to as a recipe. The data file DRAM Chips contains a sample of processing times, measured in fractions of hours, at a particular machine center for one chip recipe.

a. Compute the mean processing time.

b. Compute the median processing time.

c. Determine what the mode processing time is.

d. Calculate the 80th percentile for processing time.