The two conditional relative frequency tables below show the results of a survey asking students whether they are taking a
foreign language or not.
Table A Frequency of Foreign-Language Studies by Column
Taking a Not Taking a
Foreign Foreign
Total
Language Language
Middle
0.34
0.64
School
High School 0.66 0.36*
Total 1.0 1.0 1.0
Table B: Frequency of Foreign-Language Studies by Row
Table B: Frequency of Foreign-Language Studies by Row
Taking a Not Taking a
Foreign Foreign Total
Language Language
Save and Exit
Suosit

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.