Determine the sampling method used in the following scenarios and state whether it is generally biased,...

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Statistics

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, â€¦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 â€œmedicationâ€ do not know if they are inthe test group, or the placebo group.

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a The method of choosing the products gives a biased sample If the first product is selected which is the one that came from Machine 1 the next product selected are the 11th 21st 31st and so on Hence the machines whose products are selected in this case are See Answer

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