Question

Step 1

**Decision based on critical value:**

For a left tailed test, if the test statistic is smaller than the critical value, then reject the null hypothesis, *H*_{0}. Otherwise fail to reject* H*_{0}.

If *H*_{0} is rejected, then it can be interpreted that “there is enough evidence to suggest that *H*_{0} is false, that is, to support the claim made by the alternate hypothesis, *H _{a}* at level of significance

Step 2

**Identifying whether the null hypothesis is rejected or not:**

Here, the test static for the HR manager’s hypothesis about the mean number of record participants is 13.86**. **The critical value is –1.751. The rejection region is left- tailed. But here, the test statistic is not smaller than the critical value. That is, test statistic (13.86) > c...

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