Mimi just started her tennis class three weeks ago. On the average, she is capable to return 15% of her opponent's serves. If her opponent serves 10 times, answer following questions:
(a) Determine the probability that she returns at least 2 of the 10 serves from her opponent? (Show work and round the answer to 4 decimal places)
(b) How many serves can she expect to return? (Hint : What is the expected value?) (Show work and round the answer to 2 decimal places)