Did you read your other thread? This question is 100% the same as this one.
From years of experience fishing for trout in the Yellowstone River you know that the mean length of trout you catch is 14.7 inches with a standard deviation of 1.5 inches.
A) Use Chebyshev's Theorm to find an interval A to B for the lengths of trout in which at least 75% of the fish you catch will fall.
B)Compute the CV for this data.
Please help me. Thank you