According to the Centers for Disease Control, the mean number ofcigarettes smoked per day by individuals who are daily smokers is18.1. A researcher claims that retired adults smoke less than thegeneral population of daily smokers. To test this claim, sheobtains a random sample of 25 retired adults who are currentsmokers, and records the number of cigarettes smoked on a randomlyselected day. The data result in a sample mean of 16.8 cigarettesand a standard deviation of 4.8 cigarettes. Do the data support theclaim that retired adults who are daily smokers smoke less than thegeneral population of daily smokers? Conduct a hypothesis test at ?= 0.10. Assume the population is normally distributed. Hint: ? isunknown, and this is a one-tailed test. (5 points) State thehypotheses ? H?_0: H_1: b. Compute test statistic (Round to thenearest 100th) c. Find critical value (Round to the nearest 100th)d. State decision rule: e. State your conclusion. First, stateeither “Reject the null hypothesis” or “Fail to reject it.” Then,interpret your conclusion:
