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21. Which one of the f handed people in the class? ollowing gives the mean and standard deviation for the number of left- Mea please explain how to find standard deviation


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19. se have aiven that 20 19 0.2 OA13 -20S2 e hav aiven that Applarimately-R0% et the population is left class Cortaing 20 pe sles handeo ti.eitad e 20 タ! The left-han

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