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A local community is concerned about the number of people using electric cars. They suspect that the
proportion of residents owning electric vehicles is below the national average of 15%. A survey of 400 local
residents revealed that 12.22% owned electric cars. To test whether the proportion of electric car owners is
less than 15%, what is the p-value?
P(Z<1.56)=0.9406, P(Z<-1.18) = 0.1190.
A. 0.0594
B. 0.1190
C. -1.56
D. 0.9406
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