Question

you use a website, state the website number and what you inputted to the website. u must draw-in the rejection regions, and label critical values, like Zo and to, in the no gram provided in the question RT ANSWER. Write the word or phrase that best completes each statement or answers the ques de an appropriate response. 1) A youth prevention organization is examining the effect of peer pressure on the decision of teenagers to smoke. A survey of 97 teenagers, ages 11 to 17 years who smoked in the last 30 days, was conducted. The random sample consisted of 25 teenagers who said all/most of their friends smoke, 40 who said some of their friends smoke, and 32 who said none of their friends smoke. The results are shown in the figure. At a 0.01, can y organization's claim that the proportion of teens who decide to smoke is lower when no u support the of their friends smoke? Hol Propor ton be is loner when nc How Friends Affect Youth Smoking Percentage of 11-17-year-olds who smoked a cigarette at least once in the past 30 days. smoke a srtian 44.1 % 45 is depedent whe

Answer 1

The null and alternative hypothesis

H0: p1=p2

Ha: p1 <p2

where p1 represents proportion of teen smokers , none of their friends smoke

and p2 represents proportion of teen smokers, some or most of their friends smoke.

Test statistic

pl - p2

where

nlpl+ n2p2 nln2

pl 32/97 0.33

p2-65/97 = 0.67

P0.5,Q0.5

z = - 4.74

Critical value of z(left tailed) at is zc= - 2.33

α 0.01

Since value of test statistic , IzI > I zc I

We reject H0.

At , there is sufficient evidence to conclude that proportion of teens who decide to smoke when none of their friends smoke is lower.

α 0.01