Exercise 1.
# Label columns ‘Rep’ and ‘Ran’.
ONET ‘Rep’;
TEST 37.659.
# Repeat for ‘Ran’.
TWOSAMPLE ‘Rep’ ‘Ran’
# No need to pool estimates of variance with such large samples and there might be a difference in variability. In fact the variances are similar and pooling or not has little effect on the test.

Exercise 2.
i) # Label columns ‘X’, ‘Z’, ‘Region’.
   RANDOM 1000 ‘X’;
   NORMAL 12 0.8.
   LET ‘Z’ = (‘X’ – 12)/0.8
   CODE (-1000:-1.96) –1 (-1.96:1.96) 0 (1.96:1000) 1 ‘Z’ ‘Region’
   TALLY ‘Region’

<< back