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Question 3 options: A survey of 280 students showed that 105 of them purchase books online. Find a 86% confidence interval estimate of the proportion

Question 3 options:

A survey of 280 students showed that 105 of them purchase books online. Find a 86% confidence interval estimate of the proportion of all students who purchase books online.

find :

1)Critical Value =

2)Margin of Error (round answer to 3 decimal places) =

3)Confidence Interval (Type lower limit in the first textbox, upper limit in the second textbox. Express answers in decimal rounded to 3 decimal places):

< p <

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