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Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car.

FYI... The professor usually prefers TI calculator solutions, but I'd need to see the steps from very basic please.

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n=388 X - 314 314 P 388 I-a 082 x = 0.18 q=0.09 20.09 = 1:39 ( by z table) C.I. for P- ê 2212 Ê 11- 0.81 t 2oog 0.81 X 0.19 7

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