Construct one table that includes relative frequencies based on the frequency distributions shown below, then compare the amounts of tar in nonfiltered and filtered cigarettes. Do the cigarette filters appear to be effective? (Hint: The filters reduce the amount of tar ingested by the smoker.)

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Part 1

Complete the relative frequency table below.

Tar (mg)	Relative Frequency (Nonfiltered)	Relative Frequency (Filtered)
610	00%	0.080.08%
1115	00%	0.040.04%
1620	0.040.04%	0.20.2%
2125	00%	0.680.68%
2630	0.640.64%	00%
3135	0.280.28%	00%
3640	0.040.04%	00%

(Simplify your answers.)