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pckofwolfs

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involves knee problems. More than two-thirds of the surgeries involve full knee replacements.

*Round your answer to the nearest percent if necessary*

Age of Adults Getting Knee Replacements

Age Percentage

18-44 2.8%

45-64 24.6%

65-74 43.3%

75-84 26.7%

85-older 2.9%

a) What is the probability that an orthopedic case selected at random involves knee

problems? [1]

The answer I put here was 26%.

b) Of those cases, from part (a), estimate the probability that the case requires full knee

replacement. [1]c) Compute the probability that an orthopedic case selected at random involves a knee

problem and requires a full knee replacement.