New weight-watchers company-weight reducers international

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A new weight-watchers company, Weight Reducers International, advertises that those who join will lose, on the average 10 pounds. A random sample of 50 people who joined the new weight reduction program revealed the sample mean loss to be 8 pounds with a sample standard deviation of 2.6 pounds. At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds?

Reference no: EM13322187

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