You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.21. With H1 : p
>
>
0.21 you obtain a test statistic of
z
=
2.831
z
=
2.831
.
Use a normal distribution calculator and the test statistic to find the P-value accurate to 4 decimal places. It may be left-tailed, right-tailed, or 2-tailed.