10. An Associated Press-GfK Poll shows that 38% o f American drivers favor U.S. cars, while 33% prefer Asian brands, with the remaining 29% going for other foreign cars (www

.msnbc.com, April 2 1 , 2010). This highlights a significant improvement for U.S. automakers, especially when just a few years ago General Motors Co. and Chrysler LLC needed government help just to survive. Perhaps Americans are giving U.S. automakers a closer look due to their buffed-up offerings and Toyota's safety concerns. A researcher believes that the "buy American" sentiment may also be the result o f watching an iconic American industry beaten down amid the Great Recession. He wonders whether the preferences for cars have changed since the Associated Press-GfK Poll. He surveys 200 Americans and finds that the number o f respondents in the survey who prefer American, Asian, and other foreign cars are 66,70, and 64, respectively. A t the 5% significance level, can the researcher conclude that preferences have changed since the Associated Press-GfK Poll?