Hi for problem 3, please only do b, thanks

Problem 3. Remaining time: 99:51 (min:sec) (1 point) The following random sample was selected from a normal distribution: 14 12 1 19 1 3 11 17 16 9 (a) Construct a 90% confidence interval for the population mean M. (b) Construct a 95% confidence interval for the population mean M. SMS Note: You can earn partial credit on this problem. preview answers Problem 4. (1 point) A poll is taken in which 317 out of 500 randomly selected voters indicated their preference for a certain candidate. Find a 95% confidence interval for p. SPS Note: You can earn partial credit on this problem. preview answers Problem 5. (1 point) A. Determine the sample size required to estimate a population proportion to within 0.03 with 90.7% confidence, assuming that you have no knowledge of the approximate value of the sample proportion. Sample Size = B. Repeat part the previous problem, but now with the knowledge that the population proportion is approximately 0.33. Sample Size = Note: You can earn partial credit on this problem. preview answers Problem 6. (1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) / and standard deviation o = 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the