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Topic Review (Newest First)

  • 06-10-2013, 04:07 PM
    Bere

    STATS help please asps?

    A certain type of automobile battery is known to last an average of 1130 days with a standard deviation of 100 days. If 400 of these batteries are selected, find the following probabilities for the average length of life of the selected batteries. (Round your answers to four decimal places.)
    (a) The average is between 1124 and 1130

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