We planned to be able to detect a statistically significant effect with four control patients for every burn patient, using a one-tailed test
On the other hand, the estimated coefficient on the interaction term is positive but it, too, is not statistically significant under a two-tailed test although it is significant at the 10 % level of a one-tailed test
The value of t-critical will be obtained from the one-tailed test
t-table with a critical error equal to 0.
0000, while for the case -10AB vs -10 BA the p-value for the one-tailed test
3 and 4, so that these coefficients need to be subjected to only a one-tailed test
that quantity moves inversely with price), making a one-tailed test
This one-tailed test
is significant at the ten percent level.
Denote significantly different from zero in a one-tailed test
at 10 percent, 5 percent, i percent, respectively.
A one-tailed test
with a 5 percent significance level is used to determine if there is a positive abnormal return on day 0.
The alternative hypothesis implies a one-tailed test
to the left.
When a researcher postulates a direction in which the alternate hypothesis lies, a one-tailed test
Indicates statistical significance at the 5% level, one-tailed test