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Another E-Cig Study In a study of adult smokers who wanted to quit, 657 subjects were randomly assigned to one of three treatment groups: subjects in Group 1 were given nicotine e-cigarettes, subjects in Group 2 were given nicotine patches, and subjects in Group 3 were given placebo e-cigarettes. The response variable was whether the subject maintained abstinence from cigarettes for six months, verified using exhaled breath carbon monoxide measurement.

(a) What type of experimental design is this?

(b) What is the response variable?

(c) What are the treatments? How many levels does the treatment have?

(d) Explain why it is not appropriate to use a one-way ANOVA to analyze the effectiveness of e-cigs with nicotine. Suggest an appropriate analysis.

(e) The results of the study are shown to the right. Using the procedure suggested in part (d), perform the analysis regarding the effectiveness of the treatment. Be sure to state the null and alternative hypotheses.

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Hazardous Activities In a survey of 3029 adult Americans, the Harris Poll asked people whether they smoked cigarettes and whether they always wear a seat belt in a car. The table shows the results of the survey. For each activity, we define a success as finding an individual who participates in the hazardous activity.

(a) Why is this a dependent sample?

(b) Is there a significant difference in the proportion of individuals who smoke and the proportion of individuals who do not wear a seat belt? In other words, is there a significant difference between the proportion of individuals who engage in hazardous activities? Use the  level of significance.

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Q6a). You work for a trading company in Vancouver BC, Canada. Your company is going to buy from a vendor localed outside the lown of Reynosa in Mexico. Your company’s policy is to slart assuming shipment responsibility on the U.S. side and not to worry about customs formalities in Mexico. If you choose to use road mode in transportation of your product and FCA as the Incoterm 2020. Who is lo pay customs lees and livight from Mexico to the U.S. / who is to pay lor freight and Clons les lhom he US to do? Answer: A Vendor vendor B. Vendor/buyer C Buyer/vendor D. Buyer/buyer Q6b). There are two Incoterms 2020 that one is the buyer pays for all associated costs including freight whilst the other is the seller pays for all associated costs including freight. ANSWER ATXWTCA B. TOBOT IWDDP D TORDDP Q6C) You work for a trading company in Vancouver BC, Canada. Your company is going to buy from a vendor located outside the City of Tokyo in Japan using CF Vancouver as the Incoterm to 2020. Who is responsible for costs associated wiüh trucking transportation and customs declaration in Japan who is responsible for costs associated with trucking transportation and customs declaration in Canada Answer: A Vendor vendor B. Vendor buyer C. Buyer/vendor D. Buyer/buyer as ou dement name when you submit the

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Why are mergers attractive to CEOs? One of the reasons might be a potential increase in market share that can come with the pooling of company markets. Suppose a random survey of CEOs is taken, and they are asked to respond on a scale from 1 to 5 (5 representing strongly agree) whether increase in market share is a good reason for considering a merger of their company with another. Suppose also that the data are as given here and that CEOs have been categorized by size of company and years they have been with their company. Use a two-way ANOVA to determine whether there are any significant differences in the responses to this question. Let  0.05.

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