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Please help 8 The proportion of adult women in a certain geographical region is 9 approximately 49%. A marketing survey telephones 400 people at random.

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8 The proportion of adult women in a certain geographical region is 9 approximately 49%. A marketing survey telephones 400 people at random. 10 Complete parts a through e below. 12 13 14 15 a) What is the sampling distribution of the observed proportion that are 16 women? 1 18 O A. Approximately Exponential B. Approximately Normal O C. Approximately Uniform O D. None of these NNNNNNNNNNH b) What is the standard deviation of that proportion? (Round to three decimal places as needed.)

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