P(malignant tumor) = 0.000011
a) Mean number of cases in a group of 19,195 children = 19,195 x 0.000011
= 0.211
b) P(number of tumor cases is 0 or 1) = (1 - 0.000011)19195 + 19194x0.000011x(1 - 0.000011)19194
= 0.8097 + 0.1709
= 0.981
c) P(more than 1 case) = 1 - P(0 or 1 case)
= 1 - 0.981
= 0.019
d) B. No, because the probability of more than one case is very small
Question Help A rare form of malignant tumor occurs in 11 children in a million, so...
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