A 4-column table with 3 rows. The first column has no label with entries before 10 p m, after 10 p m, total. The second column is labeled 16 years old with entries 0.9, a, 1.0. The third column is labeled 17 years old with entries b, 0.15, 1.0. The fourth column is labeled total with entries 0.88, 0.12, 1.0 Determine the values of the letters to complete the conditional relative frequency table by column. a = b =

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.