Question1: It is known the population IQ score follows a normal distribution with mean as 100, SD as 10. A researcher is interested in studying if the average IQ of students from statistics courses on average has a higher IQ score than the population IQ score. To test this hypothesis, the researcher randomly collected a sample of 25 students from statistic class, the mean IQ score for this sample is 110. Compete for the hypothesis test at significant level. Step 1: Hypothesis Step 2: Criteria Step 3: Calculation (hint: calculated the z score of ) Step 4: Conclusion (hint: if your obtained z score is more extreme than the critical z score, you could reject H0 and infer H1; if your obtained z score is less extreme than the critical z value, you will fail to reject H0)
Question1: It is known the population IQ score follows a
Step 1: Hypothesis
Step 2: Criteria
Step 3: Calculation (hint: calculated the z score of )
Step 4: Conclusion (hint: if your obtained z score is more extreme than the critical z score, you could reject H0 and infer H1; if your obtained z score is less extreme than the critical z value, you will fail to reject H0)
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