A research study compares the risk of lung disease for men who smoke to the risk of lung disease for women who smoke. The sample relative risk is 1.1 and a 95 confidence interval for the relative risk is 0.5 to 1.9 . Which of the following statements is most correct about the comparison of the two groups?
a. The population risks may be the same because the interval includes the value 1 .
b. The population risks may be the same because the interval doesn't include the value 0 .
c. The population risks might differ because the interval includes the value 1 .
d. The population risks might differ because the interval doesn't include the value 0 .
Question 2
Data is to be gathered to estimate the proportion of residents who will vote for Mr. Treehouse in the coming city elections. A random sample of 650 voters is interviewed and 306 of them say that they will support Mr. Treehouse. Use the Empirical Rule to find values that fill in the blanks in the following sentence: In about 95 of all randomly selected samples of n = 650 voters, we would estimate the population proportion of all residents who will vote for Mr. Treehouse in the coming city elections to be between _____ and _____.
Fill in the blank(s) with correct word
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