Answer Happy

Suppose we suspected an unusual distribution of blood groups in patients undergoing one type of surgical procedure. We know that the expected distribution for the population served by the hospital which performs this surgery is 44% group O, 45% group A, 8% group B and 3% group AB. We can take a random sample of routine pre- operative blood grouping results and compare these with the expected distribution. Results for 187 consecutive patients: 0 67 A 83 Blood Group: B 29 AB 8 Test the hypothesis that the given distribution is correct. Report the test statistic to two decimal places, the degrees of freedom, and the p-value to four decimal places. test statistic = 75.73 degrees of freedom = .05 p-value= .0000

Manatees: Do more boats bring more kills? Is there good evidence that the number of manatees killed increases as the number of boats registered increases? State hypotheses. (number of boats registered measured in thousands) Boats Kills 447 13 460 21 481 24 498 16 513 24 512 20 526 15 559 34 585 33 614 33 645 39 675 43 711 50 719 47

tructure.com 675 43 711 50 719 47 681 53 679 38 678 35 696 49 713 42 732 60 755 54 809 66 830 82 880 78 944 00 962 95 978 73 983 69 1010 79 1024 92

ct Question 16 0/1 pts Give a 95% confidence interval for the increase in the number of manatees killed for each additional 1000 boats registered. Round to four decimal places 95% confidence interval: ( 57.5 89.2 Answer 1: 57.5 Answer 2: 89.2

al Question 18 0.5 / 1 pts Create a 95% confidence interval for the mean number of manatees killed if 900,000 boats are registered 95% confidence interval = ( 69.2 77.5 Answer 1: 69.2 Answer 2: 77.5