OpenStax, Introductory Business Statistics 2e §7.2 Using the Central Limit Theorem · Exercise 33 · Statistics · Sampling distributions
Using the Central Limit Theorem · Exercise 33
A large population of 5,000 students take a practice test to prepare for a standardized test. The population mean is 140 questions correct, and the standard deviation is 80. What size samples should a researcher take to get a distribution of means of the samples with a standard deviation of 10?
OpenStax, Introductory Business Statistics 2e · §7.2 Using the Central Limit Theorem · Exercise 33
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