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  1. #1
    Jan 2008

    on a frequency table about weight of crisps:
    frequency= 15,10,20,40,10
    weight in grams=14-16,16-18,18-20,20-22,22-24
    the mean is 19
    95% of the product contain at least how much crisps?
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  2. #2
    Junior Member
    Dec 2007
    University of California, Berkeley
    ok mmm id double check this but from the information you give me id think your best bet is to form a normal distribution
    you are told mean =19
    you can work out the sample variance and standard deviation from the info your told using the formula.
    this would be my first approach.
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