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    trclem40's Avatar
    trclem40 Posts: 5, Reputation: 1
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    #1

    May 6, 2008, 12:41 PM
    Normal Approximation to the binomial
    According to a report by the Commerce Department in 2004, 20% of U.S housholds had some type of high- speed Internet connection. Suppose 80 U.S House holds are selected at random. Use the normal approximation to the binomial to find the probability that 18 households have high- speed internet access. Round the probability to at least the 3rd decimal place.

    Having trouble with this one. HELP?
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    May 6, 2008, 01:20 PM
    Well what have you been able to do so far? For example if you know the percentage is 20% as it is given to you, then what is the number of homes you are looking for out of the 80 homes you are given?
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