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)
