A researcher in the town of Graham did a survey with children. He discovered that they watched TV an average of 23 hr per week (standard deviation = 1 hr, and the data are normally distributed).If a child is chosen at random in the town of Graham, what is the probability that he or she watches TV for between 20 and 26 hr per week?
A. 
B. 
C. 
D. 
E. 
Answer: C
Computer Science & Information Technology
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