Exercise 1.
# Label columns C61, ‘M1’; C62, ‘Z1’; C63, ‘M12’, C64, ‘Z12’, etc.
RANDOM 500 C1-C61;
UNIFORM 0 12.
LET ‘Z1’ = (‘M1’ – 6)/SQRT(12)
RMEAN C1-C12 ‘M12’
LET ‘Z12’ = (‘M12’ –6)
# etc. for M48 and Z48.
# Compare graphs as in previous question.
# For part (iii) look at hint in second part of Chapter 15(2) above.

Exercise 2.
# Label columns X, Z.
RANDOM 500 ‘X’;
BINOMIAL 9 0.1.
LET ‘Z’ = (‘X’ – 0.9)/0.9

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