. According to the Centers for Disease Control, the mean number of cigarettes smoked per day by individuals who are daily smokers is 18.1. A researcher claims that retired adults smoke less than the general population of daily smokers. To test this claim, she obtains a random sample of 25 retired adults who are current smokers, and records the number of cigarettes smoked on a randomly selected day. The data result in a sample mean of 16.8 cigarettes and a standard deviation of 4.8 cigarettes. Do the data support the claim that retired adults who are daily smokers smoke less than the general population of daily smokers? Conduct a hypothesis test at = 0.10. Assume the population is normally distributed. Hint: is unknown, and this is a one-tailed test.

State your approach (either the p-value or critical value approach