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Math Help - answerr check!! - Statistics question

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    answerr check!! - Statistics question

    Please help! ** Check my answers **

    59. The manager of Sam and Ella's Restaurant looked at the receipts for the last two days. The following table shows the range of values:

    Amount of ReceiptFrequency of Receipts 0-0.99171.00-1.99852.00-2.991403.00-3.99754.00-4.99825.00-5.99736.00-6.99627.00-7.99218.00-8.99149.00-9.992210.00-15.0043

    Find

    a) Q3
    My Answer:
    Q3 = 3/4 (634)th or the 1175.5th receipt
    Therefore, Q3 is 58.5 receipts into the 6.00-6.99 interval.
    Q3 = 6.00 + 58.5/62
    = 6.94 is Q3

    b) D2
    My Answer:
    D2 will be the 2/10 (634)th or the 126.8th receipt.
    D2 is 115.2 recepts into the 2.00-2.99 interval
    D2 = 2.00 + 115.2/140
    = 2.823

    c) P87
    My Answer:
    P87 will be the 87/100 (634)th or the 551.58th receipt
    P87 is 3.42 receipts into the 7.00-7.99 interval
    P87 = 7.00+ 3.42/21
    = 7.163

    Are any of these right?
    Last edited by mr fantastic; February 8th 2009 at 02:06 AM. Reason: Deleted part d) which was posted again in another thread.
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