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Following are the speeds of 40 cars clocked by radar on a particular road in a
35-mph zone on a particular afternoon:
30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37, 34, 36, 31, 35, 20,
24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52, 31, 33, 15, 27, 36, 40
Make (a) a frequency table and (b) a histogram. Then (c) describe the general
shape of the distribution.

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    20 1
    23 1
    24 1
    27 1
    28 1
    30 3
    31 3
    32 3
    33 2
    34 4
    35 2
    36 6
    37 7
    38 1
    etc

    normal around 36 mean

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