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Using the results of this survey, compute a 99% confidence interval for the proportion of all such parents whose underage child is signed up for Facebook.

Questions 15-16 are grouped together and depend on the information below. The minimum age Facebook sets for its social network is 13. A recent survey shows parents are helping their children lie to get online. The survey involved a random sampling of 645 parents age 26 and older with 10-12 year old children living with them. Of these 645 parents, 248 knew their underage children were signed up for Facebook.

Which factors contribute to the problem of air pollution at the local scale?

The study of how humans and the environment interact is called

A food desert is usually associated with

Rapid urbanization continues today in the more developed countries.

Which economic activity is largely associated with consumptive water use?

In contrast to air and water pollution, solid waste pollution is reduced through

Fracking is most closely associated with extracting