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Given that the primary source of heat is natural gas

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A random sample of homeowners from Dallas and Houston was asked to identify the primary source of heat for their homes. The following contingency table shows these results.

Source of Heat Dallas Houston
Natural Gas 160 105
Eletricity 115 45
Oil 20 10
Propane 15 10
Other 5 15

Given that the primary source of heat is natural gas, determine the probability that a randomly selected home from this sample is located in Houston.

Reference no: EM13645691

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