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6. Given a normal distribution with u =30 and =6 find (a) the normal curve area to the right of x = 17; (b) the normal curve area to the left of z = 22; (c) the normal curve area between 2 32 and a 41; (c) the normal curve area between 2 = 32 and a 41; (d) the value of a that has 80% of the normal curve area to the left; (e) the two values of a that contain the middle 75% of the normal curve area.

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