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 ? = 4. 8
and standard deviation ? = x 0.3 (based on information from Diagnostic Tests with Nursing
Implications, edited by S. Loeb, Springhouse Press). Convert each of the following x intervals to
z intervals: 4.5 < x x < 4.2 4.0 < x < 5.5
Solution
a) 4.5 < x x > 4.5 µ = 5.7 s = 0.4 standardize x to z = (x - µ) / s x > 4.5 = z > (4.5-5.7) / 0.4) = z
> -3 -3 < z c) µ = 5.7 s = 0.4 standardize x to z = (x - µ) / s 4 < x < 5.5) = ( 4 - 5.7) / 0.4 < Z < (
5.5 - 5.7) / 0.4] -4.25 < Z < -0.5 d) z < -1.44 z = (x - µ) / s -1.44 = (x-5.7)/.4 (-1.44)(.4) + 5.7 = x
-5.1 = x x < 5.1 g) µ = 5.7 s = 0.4 standardize x to z = (x - µ) / s (x > 5.9) = ( z > (5.9-5.7) / 0.4)
z > 0.5 = No. A z score of 0.50 implies that this RBC is normal. P( z > 0.5) = .3085 (not high).
Hybridoma Technology ( Production , Purification , and Application )
Red Corporation manufactures hand tools in the United States. For th.pdf
1. Red Corporation manufactures hand tools in the United States. For the current year, the QPAI
derived from the manufacture of hand tools was $1 million. Reds taxable income for the current
year was $2 million. Last year, Red had an NOL of $800,000, which Red elected to carry
forward. Calculate Reds DPAD for the current year.
Solution
DPAD = 9% of QPAI = 0.09 x 1000000 = $90000
