6. Given below is the scatter plot of the price/earnings ratio versus earnings pershare of 20 US. companies. There appear to be what kind of relationship between price/earnings ratio and earnings per share. Scatter Plot 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 P/ E Ratio 0.00 0.20 0.40 0.60 0.80 1.00 Earning Per Share . . A. None . B. Positive C. Negative . : . D. Scattered Reset Selection An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. The following result was obtained. Did Well on Midterm Did Poorly on Midterm Studying for Exam 80 20 Went Bar Hopping 30 70 11. What is the probability that a randomly selected student who went bar hopping did well on the midterm? A. 30/100 or 30% B. 30/110 or 27.27% C. 30/200 or 15% D. (100/200) *(110/200) or 27.50% Reset Selection Click to see additional instructions 16. The owner ofa fish market determined that the mean weight for a catsh is 3.2 pounds with a standard deviation of 0.8 pound. Assuming the weights of catfish are normally distributed, the probability that a randomly selected catfish will weigh between 3 and 5 pounds is l: 7 Click to see additional instructions 17. Suppose 2 has a standard normal distribution with a mean of O and standard deviation of 1 . The probability that Z values are larger than I:] is 0.6985. Click to see additional instructions 19. A random sample of 50 provides a sample mean of 31 with a standard deviation of S =14. The upper bound of a 90% confidence interval estimate of the population mean is