The June 2003 report Views of the Changing World performed by Pew Global Attitudes Project explained changes in views of U.S. by other countries. In largest Muslim nation, Indonesia, a poll conducted in May 2003 after Iraq war started reported that 83 % had the unfavorable view of America, compared to 36% a year earlier. 2003 result was reported to have the margin of error of 3 percentage points. Calculate approximate sample size for study.