Americans spend an average screen time of 4 hours on their smartphones daily, with a standard deviation of 1.2 hours per day. Currently, there are nearly 300 million smartphone users in America. If a random sample of 50 Americans was taken, what is the probability that the sample mean exceeds 3.5 hours? Round your answer to 4 decimal places. Remember to round your z-value to two decimal places. O 0.0116 O 0.2234 O 0.5603 O 0.9984 None of the above