In a survey conducted between August 29 and September 5, 395 of 1012 adults aged 18 years or older said they had a gun in the house. In 1990, 47% of households had a gun. Is there sufficient evidence to support the claim that the proportion of households that have a gun has decreased since 1990 at the 5% level of significance?

Construct a 95% confidence interval for the proportion of households that own a gun. Does the conf interval support the conclusion? Why or why not?