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Choose another classmate’s post. Change the confidence level to 90% or 99%. What happened to the confidence interval? Did the interval get larger or smaller? Explain the change. See Example. Opinions about stricter gun laws were surveyed nationally during the timeframe of October 1-10, 2018. These survey results can be found at: http://www.pollingreport.com/guns.htm The question posed was “In general, do you feel that the laws covering the sale of firearms should be made “more strict”, “less strict”, or “kept as they are now”??” The sample size, n = 1,019 adults nationwide. The margin of error is ±4 61% were in favor of “more strict” laws covering the sale of firearms 8% were in favor of “less strict” laws covering the sale of firearms 30% were in favor of “laws kept as they are now” covering the sale of firearms The confidence interval for each result is found by adding/subtracting the MoE from the results. More Strict: (61 – 4%, 61 + 4%) = (57% - 65%) 4 & 5. Using the Excel template, I will enter the following variable: Sample Size = 1,019 Proportion of sample = 61% Confidence level = 95% Confidence interval is (0.5801 – 0.6399) or (58.01% - 63.99%) Rounded this is 58% - 64%. 6. Gun laws have been an important topic in our country for some time but have surfaced more in this past year than I can remember in my lifetime. The bias alone will affect the results of these types of questions affecting this survey. The selection bias of candidates to participate in this survey will vary such as if a parent has a child that is in the military compared to a parent with a small child where a school shooting may have happened will bias their answers. If the sampling was from college students, this could be biased toward the history of shootings occurring on university campuses. A sampling error of 4% may also be present representing a margin of error for the survey results. This survey shows it was a Gallup poll, which is an assessment of public opinion; however, another survey question listed on this site also shows that the organization that sponsored that survey could have been a college university (Quinnipac) which is located in Hamden, Connecticut. If the sponsoring organization was a college university, this could present a bias towards the results. These are just considerations to take under advisement when reviewing the results of

RESEARCHED AND SOLVED BY OUR WRITING TEAM