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Posted by on Friday, July 5, 2013 at 4:27pm.

Four different brands of 18 ounce peanut butter were randomly selected from a grocer's shelves; their contents were weighed. Use these results to determine which company fills its jars more consistently?

Answer
Bama: 18.11, 17.98, 18.03, 17.99, 17.95
Skippy: 18.03, 17.96, 17.89, 17.95,17.98
Jiff: 18.02, 18.01, 17.99, 18.01, 17.99
Hytop: 17.95, 18.05, 17.98, 18.01, 18.02

  • Math - , Friday, July 5, 2013 at 4:46pm

    Bama: 18.012 Average; + 0.012
    Skippy: 17.962 Average; - 0.338
    Jiff: 18.004 Average; + 0.004
    Hytop: 18.002 Average; + 0.002

    While Hytop's average is closest to 18, Jiff's weights are all within 0.1% of the advertised weight.

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