Learning Goal: I’m working on a statistics discussion question and need an explanation and answer to help me learn.
Are people who live in Omaha more likely to own a pet than people who live in Chicago? A survey of 62 Omahans (is that a word?) found that 45 of them owned a pet. A survey of 57 Chicagoans (yes, that’s a word) found that 39 of them are pet owners. Perform a hypothesis test in Excel using and alpha-level of 0.05 to answer the question.
For your second post, find a 90% confidence interval in Excel to find the difference (if any) of pet ownership. Be sure to note whether or not your results agree!
Note – Remember that 90% would be the appropriate interval for a one-tailed test since we must take 1-2(alpha) to determine a corresponding interval. For a one-tailed test (where our alternative hypothesis is “not equal to”, we use 1-alpha.
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