One study involving heavy cell phone usage showed the mean battery life to be 10.25 hours with a standard deviation of 3.3 hours. Assume the battery life between charges is normally distributed. (a).Eind.the probability that with heavy use, the battery life exceeds 11 hours. (Round your answer to 4 decimal places.) (b) You are planning your recharging schedule so that the probability your phone will die is no more than 9%. After how many hours should you plan to recharge your phone? (Round your answer to 1 decimal place.) ----✓hours

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