most people think that the normal adult body temp is 98.6degrees F. That figure
ID: 2950968 • Letter: M
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most people think that the normal adult body temp is 98.6degrees F. That figure has recently been challeneged. In a 1992articile researchers reported a more accurate figure may be 98.2 FFurthermore the standard deviation appeared be around 0.7 degreesF. Assume a normal model is appropriate. a. in what interval would you expect most poeple's bodytemperatures to be? b. what fraction of people who be expected to have bodytemperatures aboce 98.6? c. below what body temp are the coolest 20% of people? I have the answers in the back of the book - I need helpsetting it up! most people think that the normal adult body temp is 98.6degrees F. That figure has recently been challeneged. In a 1992articile researchers reported a more accurate figure may be 98.2 FFurthermore the standard deviation appeared be around 0.7 degreesF. Assume a normal model is appropriate. a. in what interval would you expect most poeple's bodytemperatures to be? b. what fraction of people who be expected to have bodytemperatures aboce 98.6? c. below what body temp are the coolest 20% of people? I have the answers in the back of the book - I need helpsetting it up!Explanation / Answer
(a) Most people will have body's temperature in the interval of98.2 ± 2(0.7) = 98.2 ± 1.4 (b) Let X be the body temperature X~Normal(98.2, 0.72) z = (98.6 - 98.2)/0.7 = 0.5714 P(Z > 0.5714) = 0.2839 (from normal table) (c) From the normal table, it was found that the coolest 20% peoplecorresponds to z = -0.84 -0.84 = (X - 98.2)/0.7 X = 97.61 Hope this helps!
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