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In: Statistics and Probability

The average life a manufacturer's blender is 5 years, with a standard deviation of 1 year.

 

The average life a manufacturer's blender is 5 years, with a standard deviation of 1 year. Assuming that the lives of these blenders follow approximately a normal distribution, find the probability that the mean life a random sample of 9 such blenders falls between 4.5 and 5.1 years.

The answer is 0.5511

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orchestra answered 1 year ago
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