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A website offers a coupon to 50% of its visitors, selected at random, each day. Yasemin...

A website offers a coupon to 50% of its visitors, selected at random, each day. Yasemin visits the website for 4 days. What is the probability that Yasemin will not be offered a coupon on at least one of the days she visits the website? Round your answer to the nearest hundreth. P ( at least one day withought coupon) =
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