5,6,7

A random sample of 250 adults was taken, and they were asked whether they prefer watching sports or opera on TV. The following table gives the two-way classication of these adults. Prefers Watching Prefers Watching l S ort I O l W _ p s periaiw , Male 92 | 26 g' Female 48 i ' 84 If one adult is selected at random from this group, nd the probability that this adult: i. prefers watching opera ii. is a male ' iii. prefers watching sports given that the adult is a female iv. is a male given that he prefers watching sports v. is a female and prefers watching opera vi. prefers watching sports or is a male 6. A student is to select three courses for next semester. If this student decides to randomly select one course from each of seven economic courses, nine mathematics courses, and four computer courses, how many different outcomes are possible? 7. On November 1, 1995, the Emerson Medical Laboratories received blood samples from 122 patients. Ed and seven other patients had a blood serum cholesterol level of 281, whereas 78 others had a cholesterol level below 281. Find Ed's percentile rank. M.100% u lm; To get more accurate results, use formula N . where B - number of terms below the given score, E number of terms equal to the given score, N total number of terms