8.15 Make industry help environment? When the 2006 GSS asked subjects whether it should or should not be the government’s responsibility to impose strict laws to make industry do less damage to the environment (variable GRNLAWS), 1403 of 1497 subjects said yes.

a. What assumptions are made to construct a 95%

confidence interval for the population proportion who would say yes? Do they seem satisfied here?

b. Construct the 95% confidence interval. Interpret in context. Can you conclude whether a majority or minority of the population would answer yes?