SECTION 6.1 CONFIDENCE INTERVALS FOR THE MEAN (LARGE SAMPLES) 311 1 of 1 RCISES BUILDING BASIC SKILLS AND VOCABULARY 1. When estimating a population mean, are you more likely to be correct if you use a point estimate or an interval estimate? Explain your reasoning. FOR EXTRA HELP: 2. A news reporter reports the results of a survey and states that 45% of those MyStatLab surveyed responded "yes" with a margin of error of "plus or minus 5%." Explain what this means. 3. Given the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning. (a) 90% (b) 95% (c) 98% (d) 99% 4. You construct a 95% confidence interval for a population mean using a random sample. The confidence interval is 24.9