What type of hypothesis posits a difference between groups w

What type of hypothesis posits a difference between groups where the difference is specified?

Directional hypothesis

Nondirectonal hypothesis

Research hypothesis

Null hypothesis

Solution

It is the \"DIRECTIONAL HYPOTHESIS \" which reflects a diference between the direction of the groups and the direction is specified by this type of the hypothesis.

Examples : if some set of students took a training course for the national exam and one researcher wants to know whether the trained students scored above the national average of 960.so here directional hypothesis can be used because the researcher specifically hypothesizing scores of the students.

H_{0 : S = 960 Vs H1 : s1 > 960}

_{here \"s\" is the average score where S1 is the score of trained students.}