document.write( "Question 665592: Scores for a certian professional exam are approximately normally distributed with a mean of 650 and a standard deviation of 100.
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Algebra.Com's Answer #413943 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,\r
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document.write( "You didn't say how You determine the P-value of the z-value found
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document.write( "μ =650   σ = 100
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document.write( "P(  450) - P()
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document.write( "Out of 1000 randomly selected test scores, how many would you expect to be 
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document.write( "P(550 < x < 950) = P() -  P()
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document.write( "Re TY:  In the case of 'multiplying' each data item by 5: 
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document.write( "mean is 5 times greater as well as is the standard deviation 5 times greater .
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