In the past, when elementary school children in a large city were screened, 21% were found to have auditory defects. In a recent study of 100 children in the city who had been screened within the past month, 34 were found to have such defects. Do these data suggest a significant increase in the proportion of children having auditory defects? Test at a = 0.01. Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic?

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In the past, when elementary school children in a large city were screened, 21% were found to have auditory defects. In a recent study of 100 children in the city who had been screened within the past month, 34 were found to have such defects. Do these data suggest a significant increase in the proportion of children having auditory defects? Test at \( \alpha = 0.01 \). Round your answers to three decimal places, and round any interim calculations to four decimal places.

What is the test statistic?

[ ]
Transcribed Image Text:In the past, when elementary school children in a large city were screened, 21% were found to have auditory defects. In a recent study of 100 children in the city who had been screened within the past month, 34 were found to have such defects. Do these data suggest a significant increase in the proportion of children having auditory defects? Test at \( \alpha = 0.01 \). Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic? [ ]
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