According the the U.S. Census bureau, the percentage of Santa Ana residents living in poverty is 17.7% and the percentage of Irvine residents living in poverty is 13.3%. Suppose that the sample sizes were 1200 for the Santa Ana group and 1500 for the Irvine group. Use the survey data to calculate and interpret a 90% confidence interval for the difference in the proportion living poverty between Santa Ana and Irvine

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Q: In a survey, 28 people were asked how much they spent on their child's last birthday gift. The…

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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.