Mathematics, 20.02.2021 06:10 Aristar
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximate σ=28.5
You would like to be 99% confident that your estimate is within 4 of the true population mean. How large of sample size is required?
Do not round mid-calculation. However, use a critical value accurate to three decimal places — this is important for the system to be able to give hints for incorrect answers.
Answers: 2
Mathematics, 21.06.2019 18:00, hotrahul8702
Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the
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