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A lecture hall has 200 seats with folding arm tablets, 26 of which are designed for...

A lecture hall has 200 seats with folding arm tablets, 26 of which are designed for left-handers. The typical size of classes that meet there is 186 , and we can assume that about 15 % of students are left-handed. Use a Normal approximation to find the probability that a right-handed student in one of these classes is forced to use a lefty arm tablet.

The probability is %.

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Answer #1

Here it is given that probability of left hand is 0.15, so probability of right handed is 0.85

So

Standard deviation is

Now we need to find

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