100 randomly selected items were tested. It was found that 50 of the items tested positive.
Test the hypothesis that exactly 40% of the items tested positive at α = 0.05
State the null and alternative hypothesis:
H0: p = 0.4HA: p ≠ 0.4
Compute
| p^ = | x |
| n |
| p^ = | 50 |
| 100 |
p^ = 0.5
