Question

According to a survey of 785 small business participants chosen at random in the Constant Contact...

According to a survey of 785 small business participants chosen at random in the Constant Contact Small Biz Council in May of 2013, 528 of the respondents say it is harder to run a small business now than it was 5 years ago. When estimating the population proportion, what is the 95% confidence interval estimating the proportion of businesses who believe it is harder to run a business now than 5 years ago?

1)

 ( 0.29456 , 0.36022 )

2)

 ( -0.63978 , 0.70544 )

3)

 ( 0.63978 , 0.70544 )

4)

 ( 0.64506 , 0.70016 )

5)

 ( 0.65586 , 0.68936 )
Math   Statistics-And-Probability   
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Correct option is 3) (0.63978,0.70544)

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