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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
z Scores: Red Blood Cell Count Let x = red  blood cell (RBC) count in millions per cubic millimeter of whole blood. For healthy females, x has an approximately normal distribution with mean μ = 4.8and standard deviation σ = 0.3(based oninformation from Diagnostic Tests with Nursing Implications, edited by S. Loeb,Springhouse Press). Convert each of the following x intervals to z intervals.
(a) 4.5 <Â x
 (b) x < 4.2
 (c) 4.0 < x < 5.5
Convert each of the following z intervals to x intervals.
(d) z < -1.44
 (e) 1.28 < z
 (f) -2.25 < z < -1.00
(g) Interpretation If a female had an RBC count of 5.9 or higher, would that be considered unusually high? Explain using z values and Figure 6-15.
Â

The Standard Normal Distribution   (μ = 0, σ = 1)
Fig 6-15
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