Approximately 21% of Americans over the age of 18 smoke. To test this claim, a survey was conducted collecting data on 500 american adults and finds that 130 claim to smoke. Test at the 0.5 level of significance.
Other instructions in they apply:
Show all calculations and circle the appropriate answers. Round only final calculations and do so to the correct decimal point. Use only the CLASSICAL APPROACH and show all SIX STEPS.
Show all formulas and circle the appropriate answers. Show all six steps, use the p-value approach using the TI-83 or TI-84 calculator (except if chi-square test or correlation).