Stat 11

March 20, 2006

Homework #7 (due Friday, March 24)

This homework is due at the start of class Friday, March 24. You may work in groups (across sections if you like), consult with others, or use any references or tools that seem useful, but you must write up your solutions yourself.

Problems from the text (with some slight modifications):

6.35 – in each case, give H₀ and H_A, and say what the symbols m, m₀, , and n mean in each case. (You can’t give numbers; just say clearly what the symbols represent.)

6.44

6.45

6.54 – Would your result change if the test were two-sided? Does it matter that the data probably aren’t normal?

6.55(a) – Think about part (b), too, but don’t turn it in.

6.68

6.82 – If you would prefer to do a two-sided test, then do that.

7.11 – The numbers in the problem are and s. Test H₀: m = 0.

7.37(b)

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