The questions below are about testing using the P-value. Use the standard normal distribution table to help you find the answers. The tests are done using a significance level of 5 percent.
a. A lower-tailed test is conducted using the z test statistic, calculated from the sample as having a value of -1.85. What is the P-value for your test? State whether you reject the null hypothesis at the 1-percent level of significance, and then explain why.
b. Instead of a lower-tailed test, you do a two-tailed test. What is the P-value for your test? State whether you reject the null hypothesis, and then explain why.