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

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

a. X = 10

b. X = 15

c. 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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