7.Find each of the following probabilities for a normal distribution.
a.p(z> 0.25)
b.p(z> –0.75)
c.p(z1.20)
d.p(z–1.20)
8.What proportion of a normal distribution is located between each of the followingz-score boundaries?a.z= –0.50 andz= +0.50
b.z= –0.90 andz= +0.90
c.z= –1.50 andz= +1.50
9.Find each of the following probabilities for a normal distribution.
a.p(–0.25z0.25)
b.p(–2.00z2.00)
c.p(–0.30z1.00)
d.p(–1.25z0.25)
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