Mathematics, 05.05.2020 23:22 Yskdl
Steve wants to know what the average ACT scores of students graduated from his high school is. He randomly selected 25 students from an email list and asked them to provide the information. Of them 20 students replied and the summary of the ACT score is as below. Steve is told that the population standard deviation for ACT score is 4.6 for his high school, estimate the population average ACT score of his high school graduates with 86% confidence level. Sample size Mean STD Min Max 20 21.5 5.7 15 26 What is the appropriate inference procedure we need to use to answer the research question?
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Steve wants to know what the average ACT scores of students graduated from his high school is. He ra...
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