THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 98

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
From a random sample of ten students in an operations management class that uses group-learning techniques,the mean examination score was found to be 82.75 and the sample standard deviation was 3.24.For an independent random sample of eight students in another marketing research class that does not use group-learning techniques,the sample mean and standard deviation of exam scores were 75.62 and 7.27,respectively.It is assumed that the and unknown population variances are not assumed to be equal.
-Find the 95% confidence for the difference between the two population mean scores.

• A)7.13 ± 13.29
• B)7.13 ± 0.97
• C)7.13 ± 14.26
• D)7.13 ± 6.16

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Definitions:

Statistical Tests

Quantitative methods used to determine whether hypotheses about data are supported or refuted.

Primary Research

Collection of original data or firsthand information through methods like surveys, interviews, or experiments.

Experiments

Controlled procedures carried out to discover, test, or demonstrate a hypothesis or the effect of one variable on another.

Qualitative Research

A research method focused on understanding phenomena through observing and interpreting non-numerical data, such as interviews, observations, and texts.