It has been estimated that about 30% of frozen chicken contain enough salmonella bacteria to cause illness if improperly cooked. How many would a consumer expect to buy until she gets her first contaminated chicken?
a) 3
b) 3.33
c) 3.6
d) 2.52

In this case they tell us that 30% of chickens are contaminated, which means, to know how many I must buy to have my first contaminated chicken, I must divide the contaminated quantity that I need to know, that is 1 by the probability, that is 30 % or 0.3

1 / 0.3 = 3.33

Which means I have to buy 3.33 chickens to probably find my first damaged chicken.

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It has been estimated that about 30% of frozen chicken contain enough salmonella bacteria to cause illness if improperly cooked. How many would a consumer expect to buy until she gets her first contaminated chicken? a) 3 b) 3.33 c) 3.6 d) 2.52

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It has been estimated that about 30% of frozen chicken contain enough salmonella bacteria to cause illness if improperly cooked. How many would a consumer expect to buy until she gets her first contaminated chicken?
a) 3
b) 3.33
c) 3.6
d) 2.52