Question

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Decide which sampling method is being used. , Thirty-five sophomores, 69 juniors and 24 seniors are randomly selected from 461 sophomores, 328 juniors and 558 seniors at a certain high school. Every fifth teenager entering a concert is checked for possession of drugs .A researcher randomly selects an interviews fifty male and fifty female teachers. a. Systematic b. Convenience c. Stratifiled d. Simple Random Sample (SRS) e. Cluster Based on 8000 responses from 32,500 questionnaires sent to its alumni, a major unlversity estimated that the annual salary of its alumni was $103,000/year #A community college student interviews everyone in a statistics das to determine whowm a car. To ensure customer satisfaction, every 5th phone call recelved by customer service wi be monitored The names of 70 contestants are written on 70 cards. The cards are placed in a bag, and 3 names are picked from the bag A researcher for a publisher randomly selects 85 of the nation's middle schools and interviews all of the teachers at each of those schools ,

Answer 1