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What is the probability a simple random sample

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It is estimated that cats, who live in the wild or as indoor pets allowed to roam outdoors, kill an average of 10 birds a year. Assuming the number of birds killed per year, by cats, follows a normal distribution with a standard deviation of 3 birds, what is the probability a simple random sample (SRS) of 25 cats will kill an average of between 9 and 12 birds a year?

Reference no: EM132168105

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