To test whether actually taking Introductory Statistics decreases students’ anxieties about the field of Statistics, a Statistics instructor gave a test to rate student anxiety at the beginning and end of his course. Anxiety levels were measured on a scale of 0-10. Here are the data for 16 randomly chosen students from a class of 180 students: Pre-course Anxiety Level: 7 6 9 5 6 7 5 7 6 4 3 2 1 3 4 2 Post-course Anxiety Level 4 3 7 3 4 5 4 6 5 3 2 2 1 3 4 3 Do the data indicate that anxiety levels about the field of Statistics decreases after students take Introductory Statistics? Use a significance level of ? = 0.05. a) what is the test statistics and p-value? b) Find a 90% confidence interval for the difference in the anxiety levels about the field of Statistics
To test whether actually taking Introductory Statistics decreases students’ anxieties about the field of Statistics, a Statistics instructor gave a test to rate student anxiety at the beginning and end of his course. Anxiety levels were measured on a scale of 0-10. Here are the data for 16 randomly chosen students from a class of 180 students:
Pre-course Anxiety Level: 7 6 9 5 6 7 5 7 6 4 3 2 1 3 4 2
Post-course Anxiety Level 4 3 7 3 4 5 4 6 5 3 2 2 1 3 4 3
Do the data indicate that anxiety levels about the field of Statistics decreases after students take Introductory Statistics? Use a significance level of ? = 0.05.
a) what is the test statistics and p-value?
b) Find a 90% confidence interval for the difference in the anxiety levels about the field of Statistics
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