O take a mest aachary ticks e https Mwww.mathdcom/Student Player Test aspro hest

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O take a mest aachary ticks e https Mwww.mathdcom/Student Player Test aspro hestid 5170 yes Apos O watch Kids Movies. D Cred Card Accou 2BUS20.820 Business Statistics Spring 2017 Test Ch. 6 Test 8 of 100 Amandom varabi normal disabuton wea mean of soo and a standard deviaton of so Delemine the probabay for randomly fom mis populsor in part What the probability that walue isless than 90? The probabilty that he value isless 90 b What the probabilty that he valueisless than 95? The proba value less than is c What is the probability that the value more than 130? d What the that value is more than The probability value is more tan Round four seeded

Explanation / Answer

a) from normal distribution x=(X-mean)/std deviation

P(X<90) =P(Z<-1)=0.1587

b)P(X<95) =P(Z<-0.5)=0.3085

c)P(X>130)=1-P(Z<3)=1-0.9987=0.0013

d)P(X>85) =1-P(Z<85)=1-0.0668=0.9332

please check values as in pic they are blurry. std deviation has been taken as 10

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