$\"\"$

$\"\"$ of Americans shopped online for at least one holiday gift.

Probability that Americans shop online is $\"\"$ .

Probability that Americans do not shop online $\"\"$ .

Number of americans selected randomily is $\"\"$ .

$\"\"$ \ \ Find the probability that atleast $\"\"$ shopped online for a gift.

$\"\"$ .

The general form of the binomial distribution is : $\"\"$ .

Here $\"\"$ , $\"\"$ , $\"\"$ .

$\"\"$

Therefore,

$\"\"$

The correct choice is $\"\"$ .

$\"\"$

The correct choice is $\"\"$ .