(d) Convert the z interval, z < -1.44, to an x interval. (Round (e) Convert the z interval, 1.28 < z, to an x interval. (Round yo (f) Convert the z interval, -2.25 < z < -1.00, to an x interval.

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter5: Exponential And Logarithmic Functions
Section5.5: Exponential And Logarithmic Models
Problem 4ECP
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Answer d, e, & f.
68% of area
95% of area
99.7% of area
(a) Convert the x interval, 4.5 < x, to a z interval. (Round your answer to two decimal places.)
(b) Convert the x interval, x < 4.2, to az interval. (Round your answer to two decimal places.)
(c) Convert the x interval, 4.0 < x < 5.5, to a z interval. (Round your answers to two decimal places.)
<Zく
(d) Convert the z interval, z < -1.44, to an x interval. (Round your answer to one decimal place.)
(e) Convert the z interval, 1.28 < z, to an x interval. (Round your answer to one decimal place.)
くX
(f) Convert the z interval, -2.25 < z < -1.00, to an x interval. (Round your answers to one decimal place.)
<Xく
(g) If a female had an RBC count of 5.9 or higher, would that be considered unusually high? Explain using z values.
O Yes. A z score of 0.57 implies that this RBC is unusually high.
O No. A z score of -0.57 implies that this RBC is unusually low.
O No. A z score of 0.57 implies that this RBC is normal.
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Transcribed Image Text:68% of area 95% of area 99.7% of area (a) Convert the x interval, 4.5 < x, to a z interval. (Round your answer to two decimal places.) (b) Convert the x interval, x < 4.2, to az interval. (Round your answer to two decimal places.) (c) Convert the x interval, 4.0 < x < 5.5, to a z interval. (Round your answers to two decimal places.) <Zく (d) Convert the z interval, z < -1.44, to an x interval. (Round your answer to one decimal place.) (e) Convert the z interval, 1.28 < z, to an x interval. (Round your answer to one decimal place.) くX (f) Convert the z interval, -2.25 < z < -1.00, to an x interval. (Round your answers to one decimal place.) <Xく (g) If a female had an RBC count of 5.9 or higher, would that be considered unusually high? Explain using z values. O Yes. A z score of 0.57 implies that this RBC is unusually high. O No. A z score of -0.57 implies that this RBC is unusually low. O No. A z score of 0.57 implies that this RBC is normal. Need Help? Read It Watch It
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 u = 5.5 and standard
deviațion o = 0.7.
The Standard Normal Distribution
(u - 0, o = 1)
-2
68% of area
95% of area
99.7% of area
(a) Convert the x interval, 4.5 < x, to a z interval. (Round your answer to two decimal places.)
< z
(b) Convert the x interval, x < 4.2, to a z interval. (Round your answer to two decimal places.)
(c) Convert the x interval, 4.0 <x < 5.5, to a z interval. (Round your answers to two decimal places.)
Transcribed Image Text: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 u = 5.5 and standard deviațion o = 0.7. The Standard Normal Distribution (u - 0, o = 1) -2 68% of area 95% of area 99.7% of area (a) Convert the x interval, 4.5 < x, to a z interval. (Round your answer to two decimal places.) < z (b) Convert the x interval, x < 4.2, to a z interval. (Round your answer to two decimal places.) (c) Convert the x interval, 4.0 <x < 5.5, to a z interval. (Round your answers to two decimal places.)
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