Inferring population mean from sample mean
10:03
Inferring population mean from sample mean
Feb 20, 2011
Khan AcademySal Khan
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=78.1. You would like to be 90 % confident that your estimate is within 1 of the true population mean. How large of a sample size is required?Hint: Video √(3)[ ] n=Submit Question
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