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The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces...

The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.5 ounces. You randomly select 25 cartons. What is the probability that their mean weight is greater than 20.06 ounces?

1. 0.274

2. 0.452

3. 0.548

4. 0.726

math   Statistics-And-Probability   
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