A statistical test is conducted to see if there is evidence that the proportion of US citizens who can name the capital city of Canada is greater than 0.75. Use the following possible sample results:


Sample A: 38 successes out of 40

Sample B: 31 successes out of 40

Sample C: 34 successes out of 40

Sample D: 27 successes out of 40


Required:

a. State which of the possible sample results provides the most significance evidence for the claim

b. State which (if any) of the possible results provide no evidence for the claim