Find the Requested Value $$\begin{array} { l l l l l } 2 & 2 & 3 & 1 & 2 \\33 & 18 & 17 & 36 & 28 \\1 & 19 & 12 & 2 & 37\end{array}$$

question 8

Multiple Choice

Find the requested value.
-A long-distance phone company wishes to estimate the mean duration of long-distance calls originating in California. A random sample of 15 long-distance calls originating in California Yields the following call durations, in minutes. $$\begin{array} { l l l l l } 2 & 2 & 3 & 1 & 2 \\33 & 18 & 17 & 36 & 28 \\1 & 19 & 12 & 2 & 37\end{array}$$ Use the data to obtain a point estimate of the mean call duration for all long-distance calls
Originating in California.

• A)14.4 minutes
• B)15.0 minutes
• C)14.2 minutes
• D)14.7 minutes

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Definitions:

Dilation

The process of expanding or widening in size; in physiology, it often refers to the widening of blood vessels or pupils in response to specific stimuli.

Dark Adaptation

The process by which the eyes become more sensitive to low levels of light after being in brighter light, allowing for better vision in darkness or dimness.

Absolute Thresholds

The minimum intensity of stimulation required to detect a particular sensory input 50% of the time.

Peripheral Vision

The part of vision that occurs outside the very center of gaze, allowing for the detection of stimuli and movement in a wider field around the direct line of sight.