3. Determine the point estimate of the population proportion, the margin of error for the following confidence interval, and the number of individuals in the sample with the specified characteristic, x, for the sample size provided. Lower bound=0.111, upper bound=0.349, n=1500.

5. In a survey of 2025 adults in a certain country conducted during a period of economic uncertainty, 68% thought that wages paid to workers in industry were too low. The margin of error was 8 percentage points with 90% confidence. For parts (a) through (d) below, which represent a reasonable interpretation of the survey results? For those that are not reasonable, explain the flaw.

6. A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 90% confidence if

(a) she uses a previous estimate of 0.28?

(b) she does not use any prior estimates?