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Jenae is able to purchase a different brand of coffee for half the price from a new supplier. She anticipated that her co$-$workers would object to switching to the new brand, as they were really partial to the coffee they have been drinking so far. Indeed, when offered a taste test of the old brand versus the new brand, her coworkers unanimously rejected the new brand.

Jenae's boss, Steven, pointed out that this result was most likely due to the fact that the taste test was not

$q,$

randomized

replicated

blinded

controlled