PROBLEM 18: At Jim's Gym, there is a box containing six 5-pound dumbbells and two 10-pound dumbbells. A weightlifter randomly selects two dumbbells from the box. What is the expected total weight of the two dumbbells selected A) 14.25 pounds B) 17.5 pounds C) 16.75 pounds D) 12.5 pounds E) 7.375 pounds N) none of the above

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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PROBLEM 18: At Jim's Gym, there is a box containing six
5-pound dumbbells and two 10-pound dumbbells. A
weightlifter randomly selects two dumbbells from the box.
What is the expected total weight of the two dumbbells
selected
A) 14.25 pounds
B) 17.5 pounds
C) 16.75 pounds
D) 12.5 pounds
E) 7.375 pounds
N) none of the above
Transcribed Image Text:PROBLEM 18: At Jim's Gym, there is a box containing six 5-pound dumbbells and two 10-pound dumbbells. A weightlifter randomly selects two dumbbells from the box. What is the expected total weight of the two dumbbells selected A) 14.25 pounds B) 17.5 pounds C) 16.75 pounds D) 12.5 pounds E) 7.375 pounds N) none of the above
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