A survey organization conducted telephone interviews in January 2010 in which 500 randomly selected adults in the United States responded to the following question.

"At the present time, do you favor restrictions for sales of hand guns?"

Of the 500 adults surveyed, 260 responded "yes". In December 2014, 320 of 600 randomly selected adults in the United States had responded "yes" to the same question. Does the data provide convincing evidence that the proportion of adults in the United States who would respond "yes" to the question change from January 2010 to December 2014? The hypotheses for this test are?