Use the Two-Standard-Deviations F-Interval Procedure to Find the Required Confidence $2.38$

question 63

Multiple Choice

Use the two-standard-deviations F-interval procedure to find the required confidence interval. Assume that independentsamples have been randomly selected from the two populations and that the variable under consideration is normallydistributed on both populations.
-When 16 randomly selected customers enter a single main waiting line at a bank, their waiting times have a standard deviation of $2.38$ minutes. When 25 randomly selected customers enter any one of several waiting lines, their waiting times have a standard deviation of $5.35$ minutes. Construct a $98 \%$ confidence interval for the ratio, $\sigma _ { 1 } / \sigma _ { 2 }$ , where $\sigma _ { 1 }$ is the population standard deviation of the waiting times when a single line is used and $\sigma _ { 2 }$ is the population standard deviation of the waiting times when several lines are used.

• A)\(1.322\) to \(3.497\)
• B) \(1.512\) to \(3.203\)
• C) \(1.322\) to \(4.077\)
• D) \(0.929\) to \(4.923\)

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Definitions:

Newborn Infants

Infants in the very first stages of life, typically defined as being between birth and one month old.

Complex Stimuli

Inputs or environmental factors that involve multiple, intricate elements, often requiring advanced cognitive processing to understand or respond to.

Norms

Shared guidelines or rules that dictate the behavior considered acceptable within a particular group or society.

Individual Differences

Variations among individuals in terms of their psychological traits, behaviors, or physical attributes.