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The number of contaminants in samples of one cubic centimetre of polluted water has a Poisson...

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Statistics

The number of contaminants in samples of one cubic centimetre ofpolluted water has a Poisson distribution with a mean of 1.

a. What is the probability a sample will contain some (one ormore) contaminants?

b. If four samples are independently selected from this water,find the probability that at least one sample will contain some(one or more) contaminants?

c. If 100 samples are selected instead, what is approximatelythe probability of seeing at least 60 samples with a contaminant?(Use the Normal table provided for your calculations)

Answer & Explanation Solved by verified expert
3.9 Ratings (768 Votes)
Let X be the success of having the contaminantspersampleEX P X x a What is the probability a sample will contain someone or more contaminantsPX 1 1 PX 1 06321b If four samples are independently selected    See Answer
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