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8 September, 21:44

Which is the joint relative frequency for school children who plan to attend camp and have swimming lessons? Round the answer to the nearest percent.

4%

19%

33%

44%

+2
Answers (2)
  1. 8 September, 23:32
    0
    Given a frequency table of a survey asking school children whether they are attending a summer camp, taking swimming lessons, or both.

    Summer Plans

    Camp No Camp Total

    Swimming Lessons 42 32 74

    No Swimming Lessons 18 4 22

    Total 60 36 96

    The relative frequency table is obtained from the frequency table by dividing each entry of the frequency table by the overall total of the frequency table.

    The relative frequency table of the above frequency tale is given below.

    Summer Plans (Relative Frequency)

    Camp No Camp Total

    Swimming

    Lessons 42/96 = 0.44 = 44% 32/96 = 0.33 = 33% 74/96 = 0.77 = 77%

    No Swimming

    Lessons 18/96 = 0.19 = 19% 4/96 = 0.04 = 4% 22/96 = 0.23 = 23%

    Total 60/96 = 0.63 = 63% 36/96 = 0.37 = 37% 96/96 = 1.0 = 100%

    Therefore, the joint relative frequency for school children who plan to attend camp and have swimming lessons is 44%
  2. 9 September, 00:00
    0
    The answer is the last one 44%.
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