Answer :

Answer:

Step-by-step explanation:

Let X be the variable representing SAT critical reading scores for which the mean is 507 and std dev is 109

X is normal

Critical score for 95% is Z critical = ±1.96

Convert Z to x score as

[tex]z=507+1.96(109) and z = 507-1.96(109)[/tex]

Critical values of X lie in the range

(293.36,720.64)

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