Assume the Sample Is Taken from a Normally Distributed Population $\sigma ^ { 2 }.$

question 25

Multiple Choice

Assume the sample is taken from a normally distributed population and construct the indicated confidence interval.
-A random sample of 20 women have a mean height of 62.5 inches and a standard deviation of 1.8 inches. Construct a 98% confidence interval for the population variance, $\sigma ^ { 2 }.$

• A)(1.7, 8.1)
• B)(1.3, 2.8)
• C)(0.9, 4.5)
• D)(1.8, 8.5)

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Definitions:

Esophagitis

Inflammation of the esophagus, often causing heartburn, pain, and difficulty swallowing.

Appendectomy

Surgical removal of the appendix, typically performed to treat appendicitis.

Surgical Excision

The process of removing tissue or an organ from the body through surgical means, typically to treat a disease or condition.

Inflammation

A localized physical condition in which part of the body becomes reddened, swollen, hot, and often painful, especially as a reaction to injury or infection.