The Cornell National Social Survey 8 polls 1000 U.S. adults each year throughout that time. One question asked in each survey was €œHow much does your family spend weekly on eating out?€ The table shows the results for 2008 and 2010. Was there a change?

a) Would you interpret a chi-square test as a test of homogeneity or a test of independence?
b) Write appropriate hypotheses.
c) Are the conditions for inference satisfied?
d) A calculation gives x2 = 9.581, P = 0.0481. What conclusion do you draw?
e) Here are the standardized residuals. State a more complete description of what the data say.

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2008 2010 Total $50/Wk 662 1353 $51-100 85364 $101-150 71 57128 $151-200 40 2565 >$200 Total 35 20 972 993 1965 2008 2010 $50/Wk0.8310 0.83995 0.0778-0.0786 $101-150 0.7853 07938 $51-100 $151-200 124801261 $200 1.3669 1.3815