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A brewery claims that the consumers are getting a mean volume equal to 32 ounces of beer in their quart bottles. The Bureau of Weights and Measures randomly selects 36 bottles and obtains the following measures in ounces:
32.09 31.89 31.06 32.03 31.42 31.39 31.75
31.53 32.42 31.56 31.95 32.00 31.39 32.09
31.67 31.47 32.45 32.14 31.86 32.09 32.34
32.00 30.95 33.53 32.17 31.81 31.78 32.64
31.06 32.64 32.20 32.11 31.42 32.09 33.00
32.06
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
mean is calculated for each sample, then the average distance between M and u would be:
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How many voters required to be sampled to evaluate the proportion within 0.05 with 95% confidence?
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