The accompanying TI-83/84 Plus calculator display results from the hypothesis test described in Exercise 1. Assume that

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The accompanying TI-83/84 Plus calculator display results from the hypothesis test described in Exercise 1. Assume that the hypothesis test requirements are all satisfied. Identify the test statistic and the P-value (expressed in standard form and rounded to three decimal places), and then state the conclusion about the null hypothesis.

Data From Exercise 1:

The accompanying table is from a study conducted with the stated objective of addressing cell phone safety by understanding why we use a particular ear for cell phone use. (See "Hemispheric Dominance and Cell Phone Use," by Seidman, Siegel, Shah, and Bowyer, JAMA Otolaryngology-Head & Neck Surgery, Vol. 139, No. 5.) The goal was to determine whether the ear choice is associated with auditory or language brain hemispheric dominance. Assume that we want to test the claim that handedness and cell phone ear preference are independent of each other.

a. Use the data in the table to find the expected value for the cell that has an observed frequency of 3. Round the result to three decimal places.
b. What does the expected value indicate about the requirements for the hypothesis test?

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Mathematical Interest Theory

ISBN: 9781470465681

3rd Edition

Authors: Leslie Jane, James Daniel, Federer Vaaler

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