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Health, 27.07.2019 07:30, byrdkellykellybyrd

What is echinacea and its background history?

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Biology, 17.07.2019 08:40, tommyaberman
Use the following information to answer the following question: you wake up one morning feeling slightly under the weather. a close family member enthusiastically suggests that you take some echinacea, an herb commonly used as a cold remedy. you then decide to design an experiment to test echinacea and see if this claim is true. you think, "if taken at the beginning of a cold, echinacea will reduce cold symptoms." you decide to test the effects of echinacea on 100 people who are experiencing similar cold symptoms. which of the following groups would represent an appropriate control in your experiment?
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History, 13.08.2019 02:20, sti192
Just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the nautical archaeologist needs specialized knowledge of the history and theory of ship design in order to understand shipwrecks. (a) just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the(b) just as an archaeologist who needs a background in art history to evaluate finds of ancient art, a(c) just as an archaeologist needs a background in art history to evaluate finds of ancient art, so a (d) like the archaeologist who evaluates finds of ancient art and requires a background in art history, so the(e) as evaluating finds of ancient art requires an archaeologist who has the background in art history, so the
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Mathematics, 08.10.2019 04:00, 20jhuffman
The natural remedy echinacea is reputed to boost the immune system, which will reduce flu and colds. a 6-month study was undertaken to determine whether the remedy works. from this study, the following probability distribution of the number of respiratory infections per year (x) for echinacea users was produced: x 0 1 2 3 4 p(x) 0.343 0.322 0.201 0.076 0.058 find the following probabilities: a. an echinacea user has more than one infection per year b. an echinacea user has no infections per year c. an echinacea user has between one and three (inclusive) infections per year
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