Birth Weights. According to the article “Baby Birth Weight Statistics” by V. Iannelli, which appears on the About.com Pediatrics website, in 2005, the median birth weight of U.S. babies was 3389 g, or about 7.5 lb. A random sample of this year’s births provided the following weights, in pounds. 8.7 7.5 5.4 13.9 7.9 5.8 9.3 8.9 8.3 9.3 5.7 6.1 11.7 7.3 Can we conclude that this year’s median birth weight differs from that in 2005? Use a significance level of 0.05.