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Statistics Help. A researcher claims the proportion of auto accidents that involve teenage drivers is less than 20%.

Statistics Help. A researcher claims the proportion of auto accidents that involve teenage drivers is less than 20%. ABC Insurance Company checks police records on 200 randomly selected auto accidents and notes that teenagers were at the wheel in 32 of them.


Assume the company wants to use a 0.05 significance level to test the researcher's claim.


(a) Identify the null hypothesis and the alternative hypothesis.

(b) Determine the test statistic.

(c) Determine the P-value for this test.

(d) Is there sufficient evidence to support the researcher's claim that the proportion of auto accidents that involve teenage drivers is less than 20%? Explain.


Thank you.

Top Answer

a) Ho: P > 0.2 Ha: P< 0.2 b) test statistics = -1.4142 c) p-value =... View the full answer

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Other Answers

(a) Let the null and alternative hypothesis be, H 0 : p = 0.20 H 1 : p < 0.20 (Left tailed)... View the full answer

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