D Question 4 2 pts A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average number of text messages sent or received per day is 41.5 messages, with the margin of error about 12.2. The 95% confidence interval is to Do not round the answers D Question 5 2 pts In a recent poll of 1000 American adults, the number saying that exercise is an important part of daily life was 753. Use the StatKey and statistic below to answer the questions. Bootstrap Dotplot of Proportion * Original Sample Count Sample Sire Proportion 75 1000 0.753 Bootstrap Sample 40 Count Sample Size Proportion 781 1000 0 781 30 0.0050 0.990 0.0050 20 10 0.70 0.71 0.12 0.74 0.75 0.78 0.71 0.80 0.721 0.790 a) The sample statistic = Write the decimal as it is. b) See bootstrap distribution, the standard error (SE) = Write as it is. Calculate the 95% confidence interval based on your finding above on a) and b). The 95% confidence interval is from to Do not round your answers. The 99% confidence interval (as displayed on bootstrap distribution is to Do not round your answers. Which one is a wider confidence interval ---- type 95% or 99%