A Researcher Wishes to Determine the Difference in Two Population

question 17

Multiple Choice

A researcher wishes to determine the difference in two population means.To do this, she randomly samples 9 items from each population and computes a 90% confidence interval.The sample from the first population produces a mean of 780 with a standard deviation of 240.The sample from the second population produces a mean of 890 with a standard deviation of 280.Assume that the values are normally distributed in each population and that the population variances are approximately equal.The critical t value used from the table for this is _______.

• A)1.860
• B)1.734
• C)1.746
• D)1.337
• E)2.342

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Definitions:

Ideas and Deeds

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Fear and Force

Applies to methods of control or influence based on inducing fear or the application of coercion, often seen as negative leadership or management tactics.

Performance Standards

The expected levels of performance and achievements for a task, role, or activity within an organization.

Evaluating

The act of assessing or judging the value, nature, ability, or quality of something or someone.