Question 298904: On a standard measure of hearing ability, the mean is 300 and the standard deviation
is 20. Give the Z scores for persons who score (a) 340, (b) 310, and
(c) 260. Give the raw scores for persons whose Z scores on this test are (d) 2.4,
(e) 1.5, (f) 0, and (g)-4.5
I'm having so much trouble with this course!!!!!!!
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20.
Give the Z scores for persons who score
(a) z(340) = (340-300)/20 = 2
(b) z(310) = (310-300)/20 = 1/2
You can do "c":
(c) 260.
Give the raw scores for persons whose Z scores on this test are
(d) x(2.4) = 2.4*20 + 300 = 348
(e) x(1.5) = 1.5*20 + 300 = 330
(f) x(0) = 0*20 + 300 = 300
You can do "g".
(g)-4.5
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Cheers,
Stan H.
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