Question 4 (4 points) Saved The mean amount of dissolved oxygen in a stream is reported to be at least 5 mg per liter, but an environmentalist believes that it is less than 5 mg per liter. To test the hypotheses Ho: 5 vs Ha: < 5, he collects one liter of water from each of 45 random locations along a stream and measures the amount of dissolved oxygen in each liter. In the end, the environmentalist rejected the null hypothesis. If the true mean amount of dissolved oxygen in the stream is 4.8 mg per liter, did a type I, type Il, or no error occur? A) Type I error occurred. B) I cannot tell without knowing how the specimens were handled. C) No error occurred. D) Both Types I and II error occurred. E) Type II error occurred. Question 1 (4 points) Saved Suppose you are gauging the severity of a new foodborne illness that is localized in two area hospitals. To estimate this, you recorded data from the two hospitals of patients diagnosed with foodborne disease and admitted for observation for at least one night. The data you collected is summarized below: Hospitals Sample size (n) Proportion Hospital 1 32 0.56 Hospital 2 40 0.53 Conduct a test of significance at = 5% with the hypotheses Ho: p1 = P2 = 0 and - Ha: P1 P20. The p-value will be A) 0.1974 B) 0.5987 C) 0.8026 D) 0.4013 E) 0.2542