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For each problem select the best response a A researcher wishes to determine whether the...

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For each problem select the best response a A researcher wishes to determine whether the rate of water flow in liters per second over an experimental soil bed can be used to predict the amount of soil washed away in kilograms In this study the explanatory variable is the A size of the soil bed OB rate of water flow OC amount of eroded soil OD depth of the soil bed O E None of the above b The Columbus Zoo conducts a study o determine whether a household s income can be used to predict the amount of money the household will give to the zoo s annual fund drive The response variable in this study is OA a household s income OB all households in Columbus C the Columbus Zoo O D the amount of money a household gives to the zoo s annual fund drive OE None of the above c A researcher measures the correlation between two variables This correlation tells us OA whether a cause and effect relation exists between two variables OB whether or not a scatterplot shows an interesting pattern OC the strength of a straight line relation between two variables OD whether there is a relation between two variables E None of the above

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