The Number of Phone Calls Coming into a Switchboard in the Next

question 72

Multiple Choice

The number of phone calls coming into a switchboard in the next five minutes will either be 0,1,2,3,4,5,or 6.The probabilities are the same for each of these (1/7) .If X is the number of calls arriving in a five-minute time period,what is the mean of X?

• A)2
• B)3
• C)4
• D)5
• E)None of the above

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Definitions:

Stepping Movements

Reflexive motions observed in infants, resembling walking, when the soles of their feet touch a flat surface.

Depth Perception

The ability to perceive the world in three dimensions and to judge the distance of objects.

Crawling

A form of locomotion achieved by moving on hands and knees, an essential developmental milestone in infants.

Danger

The possibility of harm or injury; the potential for a situation, action, or event to cause physical, emotional, or environmental damage or risk.