Do hummingbirds prefer store-bought food made from concentrate or a simple mixture of
Chapter 12, Problem AP4.14(choose chapter or problem)
Do hummingbirds prefer store-bought food made from concentrate or a simple mixture of sugar and water? To find out, a researcher obtains 10 identical hummingbird feeders and fills 5, chosen at random, with store-bought food from concentrate and the other 5 with a mixture of sugar and water. The feeders are then randomly assigned to 10 possible hanging locations in the researchers yard. Which inference procedure should you use to test whether hummingbirds show a preference for store-bought food based on amount consumed? (a) A one-sample z test for a proportion (b) A two-sample z test for a difference in proportions (c) A chi-square test for independence (d) A two-sample t test (e) A paired t test AP4
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