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The eye blinking rate has a log-normal distribution with an average of 17 blinks/min, and a...

The eye blinking rate has a log-normal distribution with an average of 17 blinks/min, and a standard dev. of 4.5. 70 people are then sampled at random and their number of blinks are recorded over one minute. Find the probability that the total number of blinks recorded from the samples is greater than 1200.

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