Probability homework help.

Topic: In a new thread, study the following descriptions of two tests and answer the two questions that follow the test descriptions. Then post a reply to a classmate.
Test A: 40 items
Description: Measure of self-esteem
Scales: Total Score, General Self-Esteem, Social Self-Esteem, Personal Self-Esteem
Reliability: Test-retest r = .81; coefficient alphas for the Total Score, General Self-Esteem, Social Self-Esteem, Personal Self-Esteem scales are .75, .78, .57 and .72, respectively.
Validity: Contentdeveloped construct definitions for self-esteem, developed table of specifications, wrote items covering all content areas, used experts to evaluate items. Convergentcorrelated with Coopersmith’s Self-Esteem Inventory (r = .41). Discriminantcorrelated with Beck Depression Inventory (r = .05). Factor analysis revealed that the three subscales (General Self-Esteem, Social Self-Esteem, Personal Self-Esteem) are dimensions of self-esteem. Homogeneitycorrelations between the scales indicate the General scale correlated with the Social scale at .67, the Personal scale at .79, and the Total scale at .89.
Test B: 117 items
Scales: Global self-esteem, competence, lovability, likability, self-control, personal power, moral self-approval, body appearance, body functioning, identity integration, and defensive self-enhancement.
Reliability: Test-retest for each scale ranges from .65 to .71. Coefficient alphas range on each scale from .71 to .77.
Validity:  Contentbased on a three-level hierarchical model of self-esteem. Convergentcorrelated with the Self-Concept and Motivation Inventory (r = .25) and with the Eysenck Personality Inventory (r = .45). Discriminantcorrelated with Hamilton Depression Inventory (r = .19).