Suppose that ten students provided their saliva samples for covid testing one day. Later that day, the lab technician ha

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Suppose That Ten Students Provided Their Saliva Samples For Covid Testing One Day Later That Day The Lab Technician Ha 1 (53.45 KiB) Viewed 76 times

Suppose that ten students provided their saliva samples for covid testing one day. Later that day, the lab technician handling these samples accidentally misplaced labels for these ten samples. Consequently, one cannot tell, for these ten samples, which sample comes from which one of the ten students. Regardless, these samples were analyzed and testing results were produced. If these ten testing results are randomly returned to these ten students, what is the probability that NONE of them receive the right testing result (i.e., each student gets the testing report for someone else's sample)?