Jamieson and Romer (2008) evaluated children\'s beliefs concerning life expectan

Question

Jamieson and Romer (2008) evaluated children's beliefs concerning life expectancy in a diverse sample of American children. In their study, they reported at a 95% CI that "approximately 1 out of every 15 youth interviewed (6.7%[5.9%, 7.5%)) responded that they agreed they would not live much past the age of 30,4 a) What is the point estimate and interval estimate for these data? point estimate interval estimate 6 to (b) If these researchers computed an 80% CI, how would this change the precision and certainty of their estimate? O The estimate would be more precise and more certain. O The estimate would be less precise but more certain. O The estimate's precision and certainty would not change. O The estimate would be more precise but less certain. O The estimate would be less precise and less certain.

Explanation / Answer

point estimate =6.7%

interval estimate =5.9% to 7.5%

b)

this estimate would be more precise but less certain

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