When a Computed Z Value (For a Test for Differences

Multiple Choice

When a computed z value (for a test for differences between two percentages) , 4.21, is larger than the standard z value, 1.96, then this amounts to:

A) support for the null hypothesis; the two percentages are different
B) no support for the null hypothesis; the two percentages are NOT different
C) support for the null hypothesis, the two percentages are NOT different
D) no support for the null hypothesis; the two percentages are different
E) None of the above; a z value is inappropriate for testing the differences between two percentages.