a production process produces 90% non-defective parts. a sample of 10 parts from the production process is selected. a. what is the probability that the sample will contain 7 non-defective parts? b. what is the probability that the sample will contain at least 4 defective parts? c. what is the probability that the sample will contain less than 5 non-defective parts? d. what is the probability that the sample will contain no defective parts?