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Data on 4500 college graduates show mean time required to graduate with bachelors degree is 5.87...

Data on 4500 college graduates show mean time required to graduate with bachelors degree is 5.87 years with standard deviation of 1.54 years. Use a single value to estimate the mean time require to graduate for all college grads. Find the 95% confidence interval for the mean time as well.

Math   Statistics-And-Probability   
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