A Student Wanted to Construct a 95% Confidence Interval for the Average

question 64

Multiple Choice

A student wanted to construct a 95% confidence interval for the average age of students in her statistics class. She randomly selected 9 students. Their average age was 19.1 years with a standard deviation of 1.5 years. What is the 95% confidence interval for the population mean?

• A) [0.97, 3.27]
• B) [15.64, 22.56]
• C) [17.97, 20.23]
• D) [17.95, 20.25]

Recognize appropriate distribution for test statistics in ANOVA.

Calculate and interpret the pooled standard deviation in the context of ANOVA.

Assess the impact of statistical procedures on post hoc testing.

Understand and interpret the concept of between-group and within-group variability.

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Definitions:

Note

A written promise to pay a specific sum of money to a specific person or bearer on demand or at a specified future time.

National Bank

A financial institution chartered and regulated by the federal government, usually involved in commercial banking services.

Drawee's Liability

The responsibility of the drawee (typically a bank) to pay the amount specified on a draft or check when properly presented for payment.

Certifies

The act of officially recognizing something as true, accurate, or in compliance with a particular standard.