THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 21

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
From a random sample of seven students in a marketing research class that uses group-learning techniques,the mean examination score was found to be 78.25 and the sample standard deviation was 2.87.For an independent random sample of ten students in another marketing research class that does not use group-learning techniques,the sample mean and standard deviation of exam scores were 74.94 and 9.15,respectively.
-Based on the 95% confidence interval for the difference between the two population mean scores,is there evidence that the population means are different? Do not assume equal population variances.

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Definitions:

Ainsworth's Study

Landmark research by psychologist Mary Ainsworth exploring the nature of attachment between infants and their caregivers, notably through the "Strange Situation" experiment.

Clinging

The behavior of physically or emotionally attaching oneself to a person, object, or idea for security or assurance.

Separation Anxiety

A psychological condition in which an individual experiences excessive fear or anxiety upon being separated from those to whom they have a strong emotional attachment.

One-Year-Old

refers to a child or organism that has completed one year of life, typically going through rapid developmental stages.