Discussion:
Q: Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test the null hypothesis.
=0.05 for a left-tailed test.
-1.645
1.96
1.645
-1.96
Use the given information to find the P-value.
The test statistic in a right-tailed test is z = 1.43.
0.500
0.0434
0.4236
0.0764