b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed

To determine the appropriate type of hypothesis test (left-tailed, right-tailed, or two-tailed), we need to consider the research question or the specific hypothesis being tested. Here’s how to decide: 1. **Left-tailed test**: This is used when the alternative hypothesis states that the parameter of interest is less than a certain value. For example, if you are testing whether a new drug lowers blood pressure compared to a standard drug, you would use a left-tailed test. 2. **Right-tailed test**: This is used when the alternative hypothesis states that the parameter of interest is greater than a certain value. For example, if you are testing whether a new teaching method improves test scores compared to the traditional method, you would use a right-tailed test. 3. **Two-tailed test**: This is used when the alternative hypothesis states that the parameter of interest is different from a certain value (it could be either less than or greater than). For example, if you are testing whether a new product has a different average weight compared to the standard weight, you would use a two-tailed test. To summarize: - Use a **left-tailed test** if you are looking for evidence that a parameter is less than a specific value. - Use a **right-tailed test** if you are looking for evidence that a parameter is greater than a specific value. - Use a **two-tailed test** if you are looking for evidence that a parameter is simply different from a specific value. If you provide the specific context or hypothesis you are testing, I can help you determine which type of test is appropriate.