Heights (in inches) obtained by a group of people in a random survey is reported in the table. What is the expected height (in inches)?
HeightsProbability550.007600.024650.112700.357750.357800.112850.024900.007?
A. 80 in.
B. 78.3 in.
C. 78 in.
D. 71.8 in.
E. 72.5 in.
Answer: E
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