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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- 5.3 and standard deviation o = 0.7. The Standard Normal Distribution u = 0, o = 1) 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 a z interval. (Round your answer to two decimal places.)

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- 5.3 and standard deviation o = 0.7. The Standard Normal Distribution u = 0, o = 1) 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 a z interval. (Round your answer to two decimal places.)

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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 - 5.3 and standard deviation a - 0.7. The Standard Normal Distribution u = 0, o = 1) -1 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 a z interval. (Round your answer to two decimal places.) z< (c) Convert the x interval, 4.0 < x< 5.5, to a z interval. (Round your answers to two decimal 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.) (f) Convert the z interval, -2.25 <z< -1.00, to an x interval. (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 using z values. O Yes. Az score of 0.86 implies that this RBC is unusually high. O No. Az score of -0.86 implies that this RBC is unusually low. O No. Az score of 0.86 implies that this RBC is normal.
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 - 5.3 and standard deviation a - 0.7. The Standard Normal Distribution u = 0, o = 1) -1 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 a z interval. (Round your answer to two decimal places.) z< (c) Convert the x interval, 4.0 < x< 5.5, to a z interval. (Round your answers to two decimal 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.) (f) Convert the z interval, -2.25 <z< -1.00, to an x interval. (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 using z values. O Yes. Az score of 0.86 implies that this RBC is unusually high. O No. Az score of -0.86 implies that this RBC is unusually low. O No. Az score of 0.86 implies that this RBC is normal.
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