Determine the sample size needed for a level of confidence Statistics & Probabilities

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Course : Hypothesis testing and estimation
Exercise : Use the central limit theorem to find the probability that the sample mean is between two given real numbers
Exercise : Find confidence intervals for population means and/or population proportion when the sample size, the standard deviation and the sample mean are given
Exercise : Determine whether samples are biased or unbiased
Exercise : Identify whether an experiment is well constructed