168. A medicinal study reports a 95% confidence interval for the mean treatment effect as (2.0,5.0). What critical interpretation can be made regarding the null hypothesis of no effect?
A.
The null hypothesis of no effect can be rejected because the interval does not include zero.
✓
B.
The null hypothesis of no effect is likely true.
C.
The drug is harmful.
D.
The confidence interval is too wide.
📖 Additional Information
The null hypothesis of no effect can be rejected because the interval does not include zero.
