Solutiona:i:
P(4.70<X<5.00)
P(4.70-4.70/0.40<Z<5-4.7/0.4)
=P(0<Z<0.75)
=P(Z<0.75)-P(Z<0)
=0.7734-0.5
=0.2734
Soluton1b:
P(5-4.70/0.40<Z<5.5-4.7/0.4)
P(.75<Z<2)
P(Z<2)-P(Z<0.75)
=0.9772-0.7734
=0.2038
Solution1c:
P(4<x<5)
P(4-4.7/0.40<Z<5-4.7/0.40)
=p(-1.75<z<0.75)
=P(Z<0.75)-P(Z<-1.75)
=0.7333
Solutin1d:
P(X>4)
P(z>4-4.7/0.4)
P(Z>-1.75)
=P(Z<1.75)
=0.9599
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