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In a group of 1000​ people, only 2​% have Type AB blood.​ a) On​ average, how...

In a group of 1000​ people, only 2​% have Type AB blood.​

a) On​ average, how many donors must be checked to find someone with Type AB​ blood?

b)​ What's the probability that there is a Type AB donor among the first 3 people​ checked?

c)​ What's the probability that the first Type AB donor will be found among the first 6​ people?

​d) What's the probability that there​ won't be a Type AB donor before the 10th ​person?

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Given that:

In a group of 1000​ people, only 2​% have Type AB blood.​

a) On​ average, how many donors must be checked to find someone with Type AB​ blood?

b)​ What's the probability that there is a Type AB donor among the first 3 people​ checked?

c)​ What's the probability that the first Type AB donor will be found among the first 6​ people?

​d) What's the probability that there​ won't be a Type AB donor before the 10th ​person?

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