It is generally believed that electrical problems affect, Ask an Expert

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"It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot."

Q1 = What is the standard deviation for the sample proportion? a.) 0.11 b.) 0.021 c.)0.031 d.) .021

"What is the probablily that in this group over 18% of the new cars will be found to have electrical problems?"

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Category:- Statistics and Probability
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