In 2003 and 2017 a poll asked Democratic voters about theirviews on the FBI. In? 2003, 42?% thought the FBI did a good orexcellent job. In? 2017, 64?% of Democratic voters felt this way.Assume these percentages are based on samples of 1200 Democraticvoters.

1) Can we? conclude, on the basis of these two percentages?alone, that the proportion of Democratic voters who think the FBIis doing a good or excellent job has increased from 2003 to? 2017?Why or why? not?

Select one:

a. No. Although a lesser percentage is present in the? sample,the population percentages could be the same or even reversed.

b. No. Since a greater percentage is present in the? sample, wecannot conclude that a lesser percentage of Democratic voters whothink the FBI is doing a good or excellent job is present in thepopulation.

c. No. Although a lesser percentage is present in the? sample,the population percentages could be the? same, but could not bereversed.

d. Yes. Since a lesser percentage is present in the? sample, alesser percentage of Democratic voters who think the FBI is doing agood or excellent job is present in the population.

2) Construct a 95?% confidence interval for the difference inthe proportions of Democratic voters who believe the FBI is doing agood or excellent? job, p1?p2. Let p1 be the proportion ofDemocratic voters who felt this way in 2003 and p2 be theproportion of Democratic voters who felt this way in 2017.

Select one:

a. (0.39, 0.45)

b. (-0.259, -0.181)

c. (-0.24, -0.20)

d. (0.63, 0.65)