"Children will score high on a reading achievement test after 1st grade than they did prior to 1st grade".

1. The above need a one-tailed test
2. The above is directional hypothesis
3. The above is a null hypothesis
4. The above need a two-tailed test

The number of items in the original Minnesota multiphasic personality inventory was

Consider the following statements :

Assertion (A) : The research hypothesis can take a declarative form

Reason (R) : The research hypothesis can take a question form.

Now select your answer according to the coding scheme given below :

If one selects samples randomly at all stages, it is known as

The rating scale, which is based on the presumption that on object can have different connotative meanings is

The weakest criteria to evaluate performance of an employee is his or her