A Random Sample of Size 20 Taken from a Normally

question 6

Multiple Choice

A random sample of size 20 taken from a normally distributed population resulted in a sample variance of 32. The lower limit of a 90% confidence interval for the population variance would be:

• A) 52.185
• B) 20.375
• C) 20.170
• D) 54.931
• E) 29.655

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Definitions:

Richest Tenth

The segment of a population that represents the highest 10% in terms of wealth or income.

Poorest Fifth

The segment of a population that falls within the lowest 20% in terms of income distribution.

Richest Half

The segment of a society that holds more than 50% of its wealth.

Poorest Half

Denotes the lower 50% of a population ranked by wealth or income levels, usually highlighting disparities in economic standing within societies.