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Math Help - help me check my answers.

  1. #1
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    Exclamation help me check my answers.

    I had this probability problem that I worked out. I did get most of the answers and was wondering if someone could please help me double check the answers and make sure they are correct.

    I put my answers in Blue.

    The Following Data reflect the attitudes city residents have toward the repealing of the city's sunday blue-law ordinance according to the respondents religious preference.

    REPEAL OF BLUE LAW

    Religion Disapprove Approve Total
    -------------------------------------------------------------------------
    Protestant 57 63 120

    Catholic 33 17 50

    Jewish 10 20 30
    --------------------------------------------------------------------------
    Total 100 100 200

    Give the probabilities for the following possible selections from these data.

    a. selecting a catholic. 0.25

    b. Selecting a Jewish person who approves of repeal 0.1

    c. Selecting a protestant given they approve of repeal 63/200 = 0.315

    d. Selecting a protestant and then a catholic with replacement 0.6 and 0.25

    e. Selecting a person who disapproves of repeal given they are catholic.0.165


    am sure of all these answers except the last one. if someone could please help me would mucho appreciado!
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  2. #2
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    Quote Originally Posted by darren_a1 View Post
    I had this probability problem that I worked out. I did get most of the answers and was wondering if someone could please help me double check the answers and make sure they are correct.

    I put my answers in Blue.

    The Following Data reflect the attitudes city residents have toward the repealing of the city's sunday blue-law ordinance according to the respondents religious preference.

    REPEAL OF BLUE LAW

    Religion Disapprove Approve Total
    -------------------------------------------------------------------------
    Protestant 57 63 120

    Catholic 33 17 50

    Jewish 10 20 30
    --------------------------------------------------------------------------
    Total 100 100 200

    Give the probabilities for the following possible selections from these data.

    a. selecting a catholic. 0.25

    b. Selecting a Jewish person who approves of repeal 0.1 Mr F says: No. It's 10/200.

    c. Selecting a protestant given they approve of repeal 63/200 = 0.315 Mr F says: No. It's 63/100.

    d. Selecting a protestant and then a catholic with replacement 0.6 and 0.25 Mr F says: No. It's (0.6)(0.25) = 0.15.

    e. Selecting a person who disapproves of repeal given they are catholic.0.165 Mr F says: 33/50.


    am sure of all these answers except the last one. if someone could please help me would mucho appreciado!
    ..
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