17 Chapter 6- The Normal Distribution _________________. 1} lt-Iost households in the United States have at least one computer. In households where there is at least one computer in the home, suppose the 3 computers are used for is 3 hours per (lay [per average number of hour suppose the num- household] with a standard deviation of half an hour and her of hours computers are used for is normally,r distributed. (a) Dene the random variable X in words: X