Jenn P.

asked • 20d

Computing the test statistic without the mean and standard deviation?

In the past when elementary school children in a large city were screened, 18% were found to have auditory defects.  In a recent study of 200 children in the city who had been screened within the past month, 51 were found to have such defects.  Do these data suggest a significant increase in the proportion of children having auditory defects?  Test at α=0.05. Round your answers to three decimal places.


(a). Without rounding any interim calculations, compute the test statistic: 



(b). Using your answer from part (a), compute the p-value:



1 Expert Answer

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Ec0d478f a53e 4f78 8f22 58719bb17c6e

Kristine K. answered • 20d

Berkeley Grad, 10 Years Experience, 95th Percentile GRE, SAT and ACT

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