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The sample meanfasting blood sugar levelof 16 senior citizensin a local community is 140unitswith a standard deviation of 10. The local hospital records indicatethat in

The sample meanfasting blood sugar levelof 16 senior citizensin a local community is 140unitswith a standard deviation of 10. The local hospital records indicatethat in the previous year, the mean fasting blood sugar amongelderly was 130.

Calculate the minimum sample size requiredto compute a 95% confidence interval for the true mean currentfasting blood sugar level of the elderlywithin 2 units.

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