Letx= red blood cell (RBC) count in millions per cubic millimeter of whole blood. For healthy females,xhas an approximately normal distribution with mean=3.5and standard deviation=0.7.

(a) Convert thexinterval, 4.5<x, to azinterval. (Round your answer to two decimal places.)

____<z

(b) Convert thexinterval,x<4.2, to azinterval. (Round your answer to two decimal places.)

z<_____

(c) Convert thexinterval, 4.0<x<5.5, to azinterval. (Round your answers to two decimal places.)

____<z<____

(d) Convert thezinterval,z<1.44, to anxinterval. (Round your answer to one decimal place.)

x<_____

(e) Convert thezinterval, 1.28<z, to anxinterval. (Round your answer to one decimal place.)

_____<x

(f) Convert thezinterval,2.25<z<1.00, to anxinterval. (Round your answers to one decimal place.)

_____<x<_____

(g) If a female had an RBC count of 5.9 or higher, would that be considered unusually high? Explain usingzvalues.

• Yes. Azscore of 3.43 implies that this RBC is unusually high.
• No. Azscore of3.43 implies that this RBC is unusually low.
• No. Azscore of 3.43 implies that this RBC is normal.