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.) Tar (mg) in Nonfiltered Cigarettes Frequency Tar (mg) in Filtered Cigarettes Frequency 19−24 1 7−12 3 25−30 0 13−18 3 31−36 15 19−24 6 37−42 7 25−30 13 43−48 2 Click the icon to view the frequency distributions. Complete the relative frequency table below. Tar (mg) Relative Frequency (Nonfiltered) Relative Frequency (Filtered) 7−12 nothing% nothing% 13−18 nothing% nothing% 19−24 nothing% nothing% 25−30 nothing% nothing% 31−36 nothing% nothing% 37−42 nothing% nothing% 43−48 nothing% nothing% (Simplify your answers.) Do cigarette filters appear to be effective? A. No, because the relative frequencies for each are not substantially different. B. No, because the relative frequency of the higher tar classes is greater for filtered cigarettes. C. Yes, because the relative frequency of the higher tar classes is greater for nonfiltered cigarettes. D. This cannot be determined.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter1: Variables, Expressions, And Integers

Section1.5: Adding Integers

Problem 45E

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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.)

Tar (mg) in Nonfiltered Cigarettes	Frequency		Tar (mg) in Filtered Cigarettes	Frequency
19−24	1	7−12	3
25−30	0	13−18	3
31−36	15	19−24	6
37−42	7	25−30	13
43−48	2

Click the icon to view the frequency distributions.

Complete the relative frequency table below.

Tar (mg)	Relative Frequency (Nonfiltered)	Relative Frequency (Filtered)
7−12	nothing%	nothing%
13−18	nothing%	nothing%
19−24	nothing%	nothing%
25−30	nothing%	nothing%
31−36	nothing%	nothing%
37−42	nothing%	nothing%
43−48	nothing%	nothing%

(Simplify your answers.)

Do cigarette filters appear to be effective?

No, because the relative frequencies for each are not substantially different.

No, because the relative frequency of the higher tar classes is greater for filtered cigarettes.

Yes, because the relative frequency of the higher tar classes is greater for nonfiltered cigarettes.

This cannot be determined.

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