The researchers were hopeful that in the randomization proce…

The researchers were hopeful that in the randomization process for drug group: placebo and D-penicillamine, the two groups would have similar proportion of patients with the presence of ascites.  Let be the proportion of patients in D-penicillamine drug group that have the presence of ascites. Let be the proportion of patients in placebo drug group that have the presence of ascites.  Is there a statistically significant difference in the proportion of patients with the presence of ascites in the D-penicillamine and placebo groups?  Using the following output, provide the conclusion context of the problem that clearly answers the researchers’ question. You must include statistical evidence to support your conclusions.

Medical researchers are examining the effectiveness of a new…

Medical researchers are examining the effectiveness of a new vaccine against a viral disease. They administer the vaccine to a sample of 500 individuals. 375 of those individuals develop immunity after the vaccination. Based on their results, the researchers calculate an exact 95% confidence interval: (0.710, 0.787). Select the correct interpretation of the interval.

Suppose biologists are investigating a freshwater ecosystem…

Suppose biologists are investigating a freshwater ecosystem and want to determine the proportion of fish that display a specific coloration due to environmental factors. They randomly select 300 fish from this ecosystem and observe their color patterns. Out of the 300 fish, 115 display the specific coloration. Researchers found an exact 95% confidence interval: (0.328, 0.441). Select the correct interpretation of the interval.