A Researcher Estimated an Unknown Population Standard Deviation to Be

question 8

Multiple Choice

A researcher estimated an unknown population standard deviation to be 150.Using a sample of size n = 135,the sample standard deviation was found to be 100.The researcher now wishes to establish a 95% confidence interval for the population mean.Which of the following is the correct standard error of the mean to use in calculating the desired confidence interval?

• A)Can't be determined from the information given.
• B)1.05
• C)12.91
• D)0.86
• E)8.61

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Definitions:

Judgmental

Quick to make judgments or assessments, often without full information or in a critical manner.

Subjective

Relating to personal perspectives, feelings, or opinions rather than external, objective facts.

I Data

Information that is introspectively accessible, referring to data about oneself that can include thoughts, feelings, and personal experiences.

Multiple Causes

The idea that events or phenomena often have several contributing factors rather than a single source.