Sampson Corp. is evaluating the introduction of a new product. The possible levels of unit sales and the probabilities of their occurrence are shown next: a. What is the expected value of unit sales for the new product? (Do not round Intermedlate calculatlons and round your answer to the neorest whole unlt.) b. What is the standard deviation of unit sales? (Do not round Intermedlete coleulatlons. Round your answer to 2 declmal places.)