A Market Research Team Compiled the Following Discrete Probability Distribution $$\begin{array} { | c | c | } \hline x & P ( x ) \\\hline 0 & 0.30 \\\hline 1 & 0.50 \\\hline 2 & 0.10 \\\hline 3 & 0.10 \\\hline\end{array}$$

question 98

Multiple Choice

A market research team compiled the following discrete probability distribution for families residing in Randolph County.In this distribution, x represents the number of evenings the family dines outside their home during a week. $$\begin{array} { | c | c | } \hline x & P ( x ) \\\hline 0 & 0.30 \\\hline 1 & 0.50 \\\hline 2 & 0.10 \\\hline 3 & 0.10 \\\hline\end{array}$$ The standard deviation of x is _______________.

• A)1.00
• B)2.00
• C)0.80
• D)0.89
• E)1.09

---

Definitions:

Apparent Movement

The perception of movement produced by stimuli that are stationary but are presented first at one position and then, at an appropriate time interval, presented at a different position.

Sequence

An ordered list of elements or events arranged in a specific pattern.

Still Pictures

Photographs or images that capture and freeze a moment in time, without movement.

Retinal Receptors

Light-sensitive cells located in the retina that are responsible for converting light into electrical signals, which are then interpreted by the brain as vision.