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A researcher at Tacoma Community College wants to determine how many credit students have earned, on average, in their first three quarters at TCC. She has data about the number of credits earned by 228 students in their first three quarters at TCC. What type of test would be best for the researcher to conduct to answer the question, "how many credit , on average, have students earned in their first three quarters at TCC?" 1-Proportion Z Confidence Interval T Confidence Interval 1-Proportion & Test Z Test T-Test Z-Confidence Interval