Quiz Final Exam This Quiz: 250 pts pos 19 of 31 (0 complete) This Question: 5 pt

Question

Quiz Final Exam This Quiz: 250 pts pos 19 of 31 (0 complete) This Question: 5 pts Fred the probabity and rompret the resuts Econvenient, use technology to find the probabley is draws fom this papulation. What is the The populaton mean annual salary enntommerra cumplance specialists is about A random sample of specialsts The prubatlhy that the mean sway of the sample is less than ST500 is Round to ducana piaces as eeded the sesins. Choose the comect arswe belaw salary lastlar 357,500. This an unusua event salary less than SSTS00 This is not an anasual event

Explanation / Answer

mean is 60,000

sd=6400

n=440

P(xbar<57500) =P(z<(57500-60000)/(6400/sqrt(44))) =P(z<-2.59) or 1-P(z<2.59)

from normal distribution table it gives 1-0.9952 =0.48% so right answer is A

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