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Two independent samples of sizes 30 and 35 are randomly selected from two normal populations with equal variances. Which of the following is the test statistic that should be used to test the difference between the population means?
Arousal
A physiological and psychological state of being awake or reactive to stimuli, involving the brain, hormones, and physical responses.
States
Conditions or situations that are temporary and can change, in contrast to traits which are more enduring characteristics of individuals or entities.
Extremely Low Birth Weight
Refers to newborns with a birth weight of less than 1000 grams (2 pounds, 3 ounces).
Medical Interventions
These are actions taken by healthcare professionals to treat or prevent disease, injury, and other physical or mental impairments.
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