Determine the sampling method used in the following scenariosand state whether it is generally biased, or generally unbiased. Ifa method is generally biased give a reason why it may be biased. a.A factory uses three machines to make a product and the outputfollows a pattern of Machine 1, Machine 2, Machine 3, Machine 1, …To collect a sample one of the first three products in the line isselected and then every 10th product is selected. b. In order tocomplete an assignment in a statistics class, a student surveys 15of their friends. c. A sports talk show posts a poll on theirwebsite on the topic they are discussing that day. d. In a clinicaltrial an independent company is hired to administer a drug trial.100 people are selected to participate in the trial and split intotwo groups of 50. One group of 50 is given the medication, and theother 50 are given sugar pills (placebo). The participants and theperson administering the “medication” do not know if they are inthe test group, or the placebo group.
