Question: A random sample of 25 student has an average score of 78 and standard deviation of 11. form a 90% confidence interval for population mean.

A random sample of 25 student has an average score of 78 and standard deviation of 11. form a 90% confidence interval for population mean.

note: write the answer in interval form, e.g., (1. 01, 2.35) ?

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