Statistics with Probability

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  • #12982

    Ezra Halleck

    A student asked: Are 9.2 and 9.3 2-tailed problems and 9.4 is 1-tailed?

    9.2 are theoretical question. We discussed problem 1 in class. Problem 3 will only make sense if you read the text, as we did not go into the sufficient detail in class. If you are short on time, you can look at the answer in the back and then try to figure out what the story is.

    9.3 is 2-tailed. 9.3.1 is 1-tailed.

    9.4 has both types of problems:

    Chi-squared problems (13.2 and 13.3) are almost always one tailed and almost always it is the right tail. The text does discuss an example with the exception, namely the historically important example of data fudging by Mendel. However, everything I will ask you to do will involve the right tail.

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