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4. Let x be a normally distributed random variable with u=20 and o=6. Find the z value for each of the following observed values of

4. Let x be a normally distributed random variable with u=20 and o=6. Find the z value for each of the following observed values of x: a. X =10 b. X =15 X =35 d. X=40 e. X =44 Which value above is unrealistic when we are referring to a normal curve? Why

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