Statistics Homework Solutions
#193779
Probability
The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3). If X is the number of calls arriving in a five-minute time period, what is the mean of X?
a. 1/3
b. 2/3
c. 1
d. 4/3
e. none of the above
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