I need help solving these two problems for my stats class thank you

WBWK3-Ch4: Problem 1 um (2 pts) Round answers below to three decimal places. A particular manufacturing process is known to produce 0.2 proportion defective items. Suppose that a sample of 10 items produced by this process are selected at random. (a) The probability that the sample will contain exactly 1 defective item is C] . (b) The probability that the sample will contain at most 2 defective items is (c) On average, the number of defective items in a sample of this size will be Note: You can earn partial credit on this problem. (2 pts) Round answers below to three decimal places. At a certain large university, 26 percent of students are graduate students. A random sample of 11 students will be selected and the random variable X = number of graduate students in the sample will be observed. (a) The probability that the sample will contain exactly 3 graduate students is .261 (b) The expected value of X is C] . (c) The standard deviation of X is