Question: Each slice of one brand of raisin bread is advertised as containing an average of sixteen raisins. [COMMENTS & HINTS: Represent probabilities as percentages, rounded to the nearest tenth.]

a) What is the chance a randomly selected slice contains twelve raisins?

b) What is the likelihood a randomly selected slice contains twenty raisins?

c) XC: What is the standard deviation of the random variable which represents the number of raisins per slice of bread? [COMMENTS & HINTS: This question is

for bonus credit only. If necessary, research how to compute this parameter.]