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What is the probability that a person has a hemoglobin level above 11 if he is in the 25-35 age group? Hemoglobin

Level Person's Age

Less than

25 years 25-35 years Above 35 years Total

Less than 9 21 32 76 129

Between 9

and 11 49 52

Above 11 69 40

Total 139 128 162 429 A. 0.125

B0.298
C0.344
D0.356
E0.687

Verified Answer :

meerkat18

Person's Age:            25 years          25-35 years          35 years       Total
Hemoglobin level
Less than 9                    21                      32                           76              129
Between 9 and 11        49                      52
Above 11                        69                                                      40
Total                              139                    128                         162             429

128 - 32 - 52 = 44 
44/128 = 0.34375  Choice C.

What is the probability that a person who is above 35 years old has a hemoglobin level of 9 or above?

0.357

0.313

0.531

0.343

0.432


46/147=131

b.147

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