Lisa is setting up her audio equipment for her recording. She has plugged in her microphone and headphones in the audio interface. Which channel of the audio interface would Lisa connect her headphones to?

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Which strategy is used by public health to reduce the incidence of food poisoning?