Let x = red blood cell (RBC) count in millions per cubicmillimeter of whole blood. For healthy females, x has anapproximately normal distribution with mean μ = 4.2 and standarddeviation σ = 0.5. (a) Convert the x interval, 4.5 < x, to a zinterval. (Round your answer to two decimal places.) < z (b)Convert the x interval, x < 4.2, to a z interval. (Round youranswer to two decimal places.) z < (c) Convert the x interval,4.0 < x < 5.5, to a z interval. (Round your answers to twodecimal places.) < z < (d) Convert the z interval, z <−1.44, to an x interval. (Round your answer to one decimal place.)x < (e) Convert the z interval, 1.28 < z, to an x interval.(Round your answer to one decimal place.) < x (f) Convert the zinterval, −2.25 < z < −1.00, to an x interval. (Round youranswers to one decimal place.) < x < (g) If a female had anRBC count of 5.9 or higher, would that be considered unusuallyhigh? Explain using z values. Yes. A z score of 3.40 implies thatthis RBC is unusually high. No. A z score of −3.40 implies thatthis RBC is unusually low. No. A z score of 3.40 implies that thisRBC is normal.
