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SELF ASSESSMENT 1 X is a normally distributed random variable with mean 57 and standard deviation 6. Find the probability ind


X is a normally distributed random variable with mean 500 and standard deviation 25 Find the probability indicated. а. Р(X <
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Answer #1

57 Z: X- M $9.5-57 X59-5 3.5 0 417 P (x 59.5) P(0 o.y17 P (-a o 417) 0.5 +P(o<マ<0.4) P(x < 59.5)o 5 0.168 0 6628 46.-57 lo-8P( x> 52. २) -4.8 5৯. ২ - 57 -- ০-৪ २ ২ २-০ ৪|০ P (-०-৪২ २ २४) P/ २ > -० -8) . P (- ० -৪২२२०) +P[०< २< ४) +P {o < २ २०) P (०<poo-500 5 P (xx 400 < -4) =P (-« < Plo<マ<4) 0-5 - D 5 0.499968 0.00003 0. 6) P(466 x65) 36 ス6-o 466500 5 -I:36 P(466 <×<s): PP(X>400) c. Plx>Hoo P(-4 R) 0.5+ Pl0x 4) 0 99968 O5 0 999968 P(x 7 Hoo)

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