You are the pilot of a jumbo jet. You smell smoke in the cockpit. The nearest airport is less than 5 minutes away. Should you land the plane immediately?

Imagine getting a letter from a friend living in another city. In the letter, your friend tells you about a new group of friends that smoke. Your friend is thinking of trying a cigarette too. Write a letter to your friend giving advice on the dangers of smoking.

The 2003 Statistical Abstract of the United States reported the percentage of people 18 years of age and older who smoke. Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of . 30 .

How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02? Use $95 \%$ confidence.

Assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. What is the point estimate of the proportion of smokers in the population?

What is the $95 \%$ confidence interval for the proportion of smokers in the population?

The lesson mentioned several reliable sources of health information. Gather additional facts or statistics from these or other reliable sources on teen tobacco use. Share your findings with classmates.

Using complete sentence, answer the following question.
What are three dangers of using smokeless tobacco, and why do some teens mistakenly think it is safe to use?

Write a scenario describing a teen being pressured to use tobacco. Develop three refusal statements that the teen can use to avoid tobacco use.

Refer to Exercise 16.10. Predict with 95% confidence the number of sick days for individuals who smoke on average 40 cigarettes per day

Anne was pressured by a girl at school to try tobacco. "You can always quit any time you want," the girl said. How might Anne reply?

The probability that a random smoker will develop a severe lung condition in his or her lifetime is about 0.3. If you have 4 friends who smoke, are the conditions for the binomial model satisfied?

Certain tobacco products claim to have less nicotine than other products. Do you think the lower nicotine product would be less harmful? Explain the reason for your conclusion.

Nicotine, a component of tobacco, is composed of C, H, and N. A 5.250-mg sample of nicotine was combusted, producing 14.242 mg of

$$CO_2$$

and 4.083 mg of

$$H_2O.$$

What is the empirical formula for nicotine? If nicotine has a molar mass of

$$160 \pm 5 \mathrm { g } / \mathrm { mol }$$

what is its molecular formula?

In the following sentences, underline linking verbs once and predicate adjectives twice. Make sure to include all parts of verb phrases. Smoke billowing from the warehouse fire smelled pungent and oily.

Complete the sentence in a way that shows you understand the meaning of the italicized vocabulary word. Through the smoke, l could tell by the grimace on Danforth's face that he...

Hannah told her friend that smoking harms a person's lungs and heart. Her friend continues to urge Hannah to smoke a cigarette. What must Hannah do next? Explain.