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ml-recall

#z-statistic

1 question from Statistics & Estimation

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Question 1: Short answer

hardAI-checkedStatistics & Estimation

In a random sample of California voters asked about offshore drilling, 104 of 438 college graduates and 131 of 389 non-graduates answered "do not know". You test whether the two population proportions answering "do not know" differ. Using the pooled proportion, what is the Z statistic for graduates minus non-graduates?

2 decimals, with its sign