Mathematics, 28.08.2019 18:30 edwmal638
Angela wants to know how many families in her neighborhood plan to attend the parade. she puts all 120 of the neighborhood addresses in a hat and draws a random sample of 30 addresses. she then asks those families if they plan to attend the parade. she finds that 40% of the families plan to attend the parade. she claims that 40% of the neighborhood families would be expected to attend the parade. is this a valid inference?
a) yes, this is a valid inference because the 30 families speak for the whole neighborhood
b) yes, this is a valid inference because she took a random sample of the neighborhood
c) no, this is not a valid inference because she did not take a random sample of the neighborhood
d) no, this is not a valid inference because she asked only 30 families
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Angela wants to know how many families in her neighborhood plan to attend the parade. she puts all 1...
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