A laptop company claims up to 11.0 hours of wireless

A laptop company claims up to 11.0 hours of wireless web usage for its newest laptop buttery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 10.5 hours and standard deviation 27 minutes.

(a) what is the probability that the battery life is at least 11.0 hours? Round your answer to four decimal places (e.g. 98.7654). P= _________

(b) What Is the probability that the battery Ilfe Is less than 10.0 hours? Round your answer to four decimal places (e.g. 98.7654).

P= ________

(c) What is the time of use that is exceeded with probability 0.97 Round your answer to two decimal places (e.g. 98.76).

The time of use that is exceeded with probability 0.9 is ________

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