Question

Week 4 Problems Answers 10 questions, 30 points Place answers here Chapter 6 NOWN sp=16.7 37 592321 1.98 0.27 +0,26 A Chapter 06 12 Multiple Choice a = 6.7 6=13 (2=951 1. Assume researchers are trying to find out the mean concentration levels of a specific drug in a 6111 population of individuals' blood during a clinical trail. The researchers find that the sample population of 30 has a mean concentration of 6.7 mcg/mL with a standard deviation of 1.3 mcg/mL. Calculate a 95% confidence interval for the mean concentration level of the medication for the population's blood and interpret it. A) The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 4.152 mcg/mL and 9.248 mcg/mL. B) The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 6.235 mcg/mL and 7.165 mcg/mL. C) The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 4.568 mcg/mL and 8.832 mcg/mL. D) The researchers are 95.0% confident the true mean concentration of medication in the population's blood is between 4.5615 mcg/mL and 8.8385 mcg/mL. 0.2373 67to.ue 6.9 I 1.96 1305.472. a 27.165 Immor the mean Alanine Aminotransferase (ALT) levels i who do not drink alcohol. TE 1.3/0.2373

Answer 1

Given that n = 30 Ž= 6. 7 6= 1.3 confidence interal for population mean is C-1 = Ă È Lain for 95% CI, -C-2 = 6. 74 = 1.96. 7 + 1.96 1.3 130 = (6.235 7. 165) Hence option B is correct