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    Probability of a person keeping in touch with his or her parents

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    Please help with the following probability problems. Show the formula and the steps in working the formula for each problem.

    In a poll conducted in 2007, 2000 adults ages 18 yr and older were asked how frequently they are in touch with their parents by phone. The results of the poll are as follows:

    Answer Respondents (%)
    Monthly 11
    Weekly 47
    Daily 32
    Do not know 2
    Less 8

    If a person who participated in the poll is selected at random, what is the probability that the person said he or she kept in touch with his or her parents?

    a. Once a week?
    b. At least once a week?

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    https://brainmass.com/math/probability/probability-of-keeping-in-touch-366850

    Solution Preview

    If a person who participated in the poll is selected at random, what is the probability that the person said he or she kept in ...

    Solution Summary

    This solution analyzes the probability of a person keeping in touch with his or her parents. Step by step calculations are given for each problem.

    $2.19