In a survey of 240 students in an elementary statistics class at the University of California-Davis (UCD), 31 said that they were left-handed and 209 said that they were right-handed. Assume that the students are representative of all students at the school. Does this provide evidence that the proportion of UCD students who are left-handed differs from the national proportion of 0.10? Carry out the five steps of the hypothesis test for this situation. (Use ? = 0.05.)   Set up the null and alternative hypothesis. (Enter != for ≠ as needed.) H0: Ha:   Compute the test statistics for this situation. (Round your answer to two decimal places.) z = Calculate the p-value for the test. (Round your answer to four decimal places.)

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.