px-Student_t_pdf.svg.png t-Table (Table D) 6 Table A vs. Table D Table A Standard normal (z) P(Z ≤ z) df not required Table D t-distribution P(T > t) df required 7 Example: t critical values What is the t critical value for the following: a) Central area = 0.95, df = 10 b) Central area = 0.95, df = 60 c) Central area = 0.95, df = 100 d) Central area = 0.95, z curve e) Upper area = 0.99, df = 10 f) lower area = 0.99, df = 10 8 Summary: CI Confidence Interval x ± t*(df) s n Upper Confidence Bound <…
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