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A maker of protein bar claims that the average protein content of their bars is at...

A maker of protein bar claims that the average protein content of their bars is at least 24 grams per bar. A sample of 12 protein bars had protein contents of 22.1, 22.4, 22.7, 23.6, 23.7, 23.9, 24.1, 24.3, 24.3, 24.6, 24.8, 24.9. If we assume the makers claim to be correct then Find the probability of obtaining a sample with a mean at most as that of the sample taken.

Math   Statistics-And-Probability   
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