Suppose That the Proportion of Young Adults Who Read at Least

question 16

Multiple Choice

Suppose that the proportion of young adults who read at least one book per month is 0.15, and this proportion is the same in Boston and New York.Suppose that samples of 400 are randomly drawn from each city.The standard deviation of the differences for the sampling distribution between the first sample proportion and the second sample proportion (used to calculate the z score) is _______.

• A)0.0459
• B)0.0435
• C)0.0402
• D)0.0335
• E)0.0252

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