What proposals for dealing with energy and the environment do Americans favor? Gallup conducted a survey of 1,048 adults, ages 18 $in all 50 U. S. states and the District of Columbia and found the following: Spending more government money on developing solar and wind power: 702 Setting higher emissions and pollutions standards for business and industry: 681 Setting stricter standards on the use of techniques to extract natural gas from the earth: 608 Expanding the use of nuclear power: 493 Source: “ Americans Still Favor Energy Conservation Over ­Production,” bit.ly/1iLhkn2.

a. Construct a 95% confidence interval estimate for the population proportion of each proposal Americans favor for dealing with energy and the environment.

b. What conclusions can you reach concerning proposals ­Americans favor for dealing with energy and the environment?