book P-values. While the ma tion of confidence intervals an In the next chapter we di fidence intervals and hypothe is directly applicable to all th optional sections of Chapter 1 approaches relevant to study CHECK YOUR SKILLS 14.18 The Framingham Heart Study recorded the systolic blood pressure (SBP) of 3,534 adults and reported a 95% confidence interval for the population mean SBP of 126.7 to 127.9 mm Hg. The correct interpretation for this confidence interval is that we are 95% confident that (a) the adults in this sample have SBP values between 126.7and 127.9 mm Hg. (b) adults in the population have SBP values between 126.7 and 127.9 mm Hg. (c) the population mean SBP is a value between 126.7 and 127.9 mm Hg. 1 margin of error for the cited 14.19What is the confidence interval of 126.7 to 127.9 mm Hg? (a) 0.6 mm Hg (b) 1.2 mm Hg (c) 2.4 mm Hg 14.20 A study reports the mean change in high-density