Tugas 1 Geostat-Rabu Jam 7
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Transcript of Tugas 1 Geostat-Rabu Jam 7
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8/17/2019 Tugas 1 Geostat-Rabu Jam 7
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1. In a given population of two-earner male/female couples, male earnings have a mean of 40,000
USD per year an a stanar eviation of 1!,000 USD. "emale earnings have a mean of 4#,000
USD per year an a stanar eviation of 1$,000 USD. %he correlation &etween male an female
earnings for a couple is 0.$0. 'et ( enote the com&ine earnings for a ranomly selecte couple.
)a* +hat is the mean of (
)&* +hat is the covariance &etween male an female earnings
)c* +hat is the stanar eviation of (
!. orositas ari reservoar iprairaan memilii mean 0.! an variansi 0.0004. ia porositas
ipercaya teristri&usi secara normal. itung
)a* 2erapa pro&a&ilitas porositas yang itemuan antara 0.1$ an 0.!!
)&* ia &atuan engan porositas urang ari 1#3 &uan merupaan &atuan reservoar, &erapaah
pro&a&ilitas &atuan paa suatu loasi aalah &atuan reservoar
)c* 2erapaah stanar eviasi yang iperluan agar pro&a&ilitas paa &agian )&* aalah #03.
)* Dengan variansi sama, &erapaah mean yang iharapan agar pro&a&ilitas &atuan reservoar
)&atuan engan porositas le&ih &esar ari 1#3* aalah $#3.
3. (arilah ovarian an orelasi antara epth orositas, epth permea&ilitas, porositas
permea&ilitas ari ata sumur Dutton5thers-!006. elasan 7
