hello is there anyone who can check some of my homework question?

9.(1 pt)For which of the following situations is theindependentgroups t-test appropriate (if inappropriate, why?):

a.The independent variable is infant birth weight at one week (normal vs high); the dependent variable is resting heart rate.

Appropriate

b.The independent variable is radiation treatment on throat cancer patients (one group getting a low dose and the other a high dose treatment); the dependent variable is white blood cell count.

Appropriate

c.The IV is infant birth weight (grouped as low vs high); the DV is number of days absent from school in first grade.

Appropriate

d.The IV is marital status (single vs divorced vs married); the DV is a happiness score, based on a 50 point scale.

Inappropriate- This would be more a dependent because it is comparing a difference between the 2 groups making this more appropriate for independent t-test