Nonsmokers and smokers statistically significant

Reference no: EM13688741

Time reported the results of a telephone poll of 800 adult Americans (600 of them were nonsmokers) who were asked the following question:"should the federal tax on cigarettes be raised by dollars 1.25 to pay for health care reform?" let p1 and p2 are the proportions of nonsmokers and smokers, respectively, who would say yes to this question. We are given that 360 nonsmokers and 40 smokers said yes.

a) Is the difference between the sample proportions for positive answers of nonsmokers and smokers statistically significant? To answer this question, test H0:p1=p2 against H1:p1 not equal to p2 with 10 percents significance level.

b) Find the (approximate) 90 percents confidence interval for p1-p2. is this in agreements with the conclusion of part a?

Reference no: EM13688741

Questions Cloud

Agglomeration economies is scale economies in intermediate : One of the reasons for the existence of agglomeration economies is scale economies in intermediate inputs. Answer the following. What are the 3 conditions that are required for the emergence of agglomeration economies from the sharing of input suppli..

Combination of regional comparative advantage : Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ..

Bank profits-deposit liabilities : Bank Profits: Mbank has deposit liabilities of $50 million. It only keeps the minimum cash reserves required by law of 15%. Its annual costs (wages, rent, utilities, etc.) are $1.5 million. What is Mbank’s profit under the following circumstances?

Nonsmokers and smokers statistically significant : Time reported the results of a telephone poll of 800 adult Americans (600 of them were nonsmokers) who were asked the following question:"should the federal tax on cigarettes be raised by dollars 1.25 to pay for health care reform?"

Independently distributed standard normal random variables : LET X and Z be two independently distributed standard normal random variables. We defined another random variable Y=X^2+Z

Calculate the arc price elasticity of demand : For each of the following cases, calculate the arc price elasticity of demand, and state whether demand is elastic, inelastic, or unit elastic.

The money demand curve will shift to the right : The money demand curve will shift to the right if there is

Coupon bond-calculate your annual holding period return : Suppose you purchase a 3-year, 5-percent coupon bond at par and hold it for two years. During that time, the interest rate falls to 4%. Calculate your annual holding period return. Assume that the coupon bond has a face value of $100.

User Account

All Pages