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) 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.