STAT 263 Lecture Notes - Lecture 9: Round-Off Error, F-Test, Normal Distribution
4 Dec 2017
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H0: =0. 040 ha: >0. 040 n=35 s=0. 053. On calc: alpha=0. 01: mode down, 3, 2, lower boundary=2. 72, upper=4, sigma=1, mu=0, 0. 033. Go to t- table and use infinite df b/c you are using z to find t0. 01=2. 326. Tests w two standard deviations. In a previous example we found that samples, n1=5 and n2=5, from normally distributed pop with s1=271. 1 and s2=216. 8. Use the 2% level of sig to test whether there is evidence that. 2 whichever is >1. Ha: 1=/= 2 n1=5 n2=5 s1=271. 1. Find normal f by going to the table under df=4 and df=4 which is 16. 0. 300 lenses were polished using each of the two solns. With the 1st soln, 253 lenses had no defects and in the 2nd soln 196 lenses had no defects. Ans=4. 12*10^- 8 which is basically zero. We expect the same prop to fall in each column as we observed in the total column.
