- For The Following Questions Identify The Sampling Method Used Then Name Any Sources Of Bias And Describe Why They Migh 1 (233.59 KiB) Viewed 31 times
- For The Following Questions Identify The Sampling Method Used Then Name Any Sources Of Bias And Describe Why They Migh 2 (18.4 KiB) Viewed 31 times
For the following questions, identify the sampling method used. Then name any sources of bias and describe why they might make for a nonrepresentative sample. a. The Environmental Protection Agency took soil samples at 16 locations near a former industrial waste dump and checked each for evidence of toxic chemicals. They found no elevated levels of any harmful substances. Ans: a) b. An amusement park has opened a new roller coaster. It is so popular that people are waiting for up to 3 hours for a 2-minute ride. Concerned about how patrons (who paid a large amount to enter the park and ride on the rides) feel about this, they survey every 10th person on the line for the roller coaster, starting from a randomly selected individual. Ans: b) c. A manufacturing company employs 14 project managers, 48 foremen, and 377 laborers. In an effort to keep informed about any possi sources of employee discontent, management wants to conduct job satisfaction interviews with a sample of employees every month. They decide to randomly select 7 project managers, 18 foremen, and 50 laborers. Ans: c)
c) How likely is it that, if this waiter serves 15 tables tonight, he will get an average tip between $10 and $20?