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The mean weight of a tablet of a certain drug is claimed to be 50 mg. A sample of 100 tablets showed a mean weight

The mean weight of a tablet of a certain drug is claimed to be

50 mg. A sample of 100 tablets showed a mean weight of 50.15 mg with

a standard deviation of 0.4 mg. Using a 0.01 level of significance, can we

conclude that the desired weight is not properly maintained.

(Ho: =50 mg Ha: 50 mg

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