9. (1 pt) For which of the following situations is the independent groups t-test appropriate (if...

9. (1 pt) For which of the following situations is the independent groups 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.

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.

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

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

Solutions

Expert Solution

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

No, the independent groups t-test is not appropriate because we have performed two tasks on the same groups.

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.

Yes, the independent groups t-test is 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.

No, the independent groups t-test is not appropriate because we have performed two tasks on the same groups.

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

No, the independent groups t-test is not appropriate because we have 3 IV's.

orchestra answered 1 year ago

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