A core mathematics project is testing an innovative approach to teaching Mathematics that emphasizes group investigations and mathematics modeling. Researchers compared 320 students who were exposed to this new approach to 273 students who learned through a traditional curriculum. Students learning was accessed through a test at the end of academic year to see if this new approach led to higher learning gains as compared to the traditional approach. a. Write an appropriate hypothesis to be tested. b. Do you think the appropriate assumptions for inference are satisfied? Explain.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.