Answer :
The Z calculated value (-1.64) falls within the range of the Z critical values (+/- 1.64), we would accept the null hypothesis.
The question states that the Z calculated for a two-tail test is -1.64, and the Z critical is +/- 1.64.
To make a decision on the test, we need to compare the Z calculated value with the Z critical value.
In a two-tail test, the critical region is split between the two tails of the distribution.
If the Z calculated value falls outside the range of the Z critical values, we reject the null hypothesis .
If the Z calculated value falls within the range of the Z critical values, we accept the null hypothesis .
In this case, since the Z calculated value (-1.64) falls within the range of the Z critical values (+/- 1.64), we would accept the null hypothesis .
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