(1 point) (a) a sample of households in a community is selected at random from the telephone directory. in this community, 6% of households have no telephone, 11% have only cell phones, and another 25% have unlisted telephone numbers. the sample will certainly suffer from a. nonresponse. b. undercoverage. c. false responses. d. none of the above. (b) archaeologists plan to examine a sample of 2-meter-square plots near an ancient greek city for artifacts visible in the ground. they choose separate samples of plots from floodplain, coast, foothills, and high hills. what kind of sample is this
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Category: statistics |
Author: Mona Eva
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