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19 May, 08:16

Smoking levels: According to the Centers for Disease Control and Prevention, the proportion of U. S. adults age 25 or older who smoke is. 22. A researcher suspects that the rate is lower among U. S. adults 25 or older who have a bachelor's degree or higher education level. What is the null hypothesis in this case?

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  1. 19 May, 09:59
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    the null hypothesis is: The proportion of U. S. adults age 25 or older who smoke is 0.22

    Explanation:

    A null hypothesis is presumed to be true until evidence proves the contrary. Statistical data nullifies it for an alternative hypothesis.

    In this case, the null hypothesis is: The proportion of U. S. adults age 25 or older who smoke is 0.22

    The hypothesis that has to prove it is different is: the proportion of U. S. adults age 25 or older who smoke is lower than 0.22
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