personal computer is used for office work at home, research, communication, personal finances, education, entertainment, social networking, and a myriad of other things. Suppose that the average umber of hours a household personal computer is used for entertainment is two hours per day. Assume he times for entertainment are normally distributed and the standard deviation for the times is half an our. a. Find the probability that a household personal computer is used for entertainment between 1.8 and 2.75 hours per day.

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