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Philip Morris wishes to determine if there is a difference between the proportion of women and...

  1. Philip Morris wishes to determine if there is a difference between the proportion of women and proportion of men who smoke cigarettes. Random samples of 105 women and 115 men reveal that 19 women and 11 men smoke cigarettes. Does the data indicate that the proportion of women who smoke cigarettes is higher than the proportion of men who do at α=.05?

    What is the 98% confidence interval for pWomen - pMen?

    a.

    (-0.0231, 0.1937)
    b.

    (-0.0345, 0.2051)
    c.

    (-0.0340, 0.2046)
    d.

    (-0.0226, 0.1932)
    e.

    None of the answers is correct
Math   Statistics-And-Probability   
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Answer #1

The statistical software output for this problem is :

The 98% confidence interval for pWomen - pMen is ,

(-0.02231 , 0.1937)

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