Question

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.)

Click the icon to view the frequency distributions.

Complete the relative frequency table below.

Tar​ (mg)	Relative Frequency ​(Nonfiltered)	Relative Frequency ​(Filtered)
4−7
8-11
12-15
16-19
20-23
24-27
28-31

Tar​ (mg) in Nonfiltered Cigarettes	Frequency		Tar​ (mg) in Filtered Cigarettes	Frequency
12-15	1		4-7	2
16-19	1		8-11	2
20-23	14		12-15	6
24-27	6		16-19	15
28-31	3

Answer 1

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