Mathematics, 26.10.2020 19:30, sanfordl
To estimate the mean number of text messages sent by cell-phone users, a researcher chooses a location on a college campus in the city and surveys the first 50 people who walk past. These subjects are asked how many text messages they have sent in the past 24 hours. Is it likely that bias will be present in the sample?
A) Because this is a convenience sample, it is likely that the sample results will be unbiased.
B) Because this is a convenience sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
C) Because this is a convenience sample of college students, it is likely that bias is present and that the results will underestimate the mean number of text messages sent.
D) Because this is a voluntary response sample of college students, it is likely that bias is present and that the results will overestimate the mean number of text messages sent.
Answers: 2
Mathematics, 21.06.2019 18:00, mihirkantighosh
Arecipe calls for 32 fluid ounces of heavy cream. how many 1 pint containers of heavy cream are needed to make the recipe?
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Mathematics, 21.06.2019 20:20, rileychas4114
Drag each tile to the correct box. not all tiles will be used. consider the recursively defined function below. create the first five terms of the sequence defined by the given function
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Mathematics, 21.06.2019 21:20, andybiersack154
52 cm radius = diameter = area = circumference = circumfer
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To estimate the mean number of text messages sent by cell-phone users, a researcher chooses a locati...
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