A scientist asked four of her dentist friends if they thought the new Brand X sugar-free gum that she developed was effective.T
hree responded "yes." The scientist used the results to write a TV advertisement claiming that "3 out of 4 dentists prefer Brand X sugar-free gum." Is this a valid inference? Explain.
Use pencil and paper. Explain all of the factors that are necessary for an inference to be valid.
Is the inference valid? Explain. Choose the correct answer below.
A.Yes, because 3 dentists said yes out of 4 who were asked.
B.No, because 3 dentists said yes out of 7 who were asked.
C.No, because the dentists asked are not a representative sample of the population of dentists.
D.Yes, because the dentists asked are a representative sample of the population of dentists.
Use pencil and paper. Explain all of the factors that are necessary for an inference to be valid.
Is the inference valid? Explain. Choose the correct answer below.
A.Yes, because 3 dentists said yes out of 4 who were asked.
B.No, because 3 dentists said yes out of 7 who were asked.
C.No, because the dentists asked are not a representative sample of the population of dentists.
D.Yes, because the dentists asked are a representative sample of the population of dentists.
1 answer:
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