10. Refer to Example 6.2. Suppose we instead use the scores (-3, -2. -1, 0, 1, 2, 3), sub- tracting 4 froin each of the original scores. We then test Ho p=0. Explain the effect of the change in scores on

a) the sample incan and standard deviation.

b) the test statistic,

c) the P-value and interpretation