CONFIDENCE INTERVALS for the mean Classic exam solved exercises

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Published on May 22, 2022
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⭐⭐⭐⭐⭐ CONFIDENCE INTERVALS for the mean, exercises and problems solved step by step, statistical inference, normal distribution of the sample mean, mathematics applied to social sciences 2nd year of high school and university, statistics and probability in this video, among others, we will answer the following questions: How is the confidence interval calculated? What does a 95% confidence interval mean? statement In summer, in Madrid, street stalls selling melons and watermelons are set up. It is known that the weight of watermelons can be approximated by a variable with a normal distribution of mean µ and standard deviation σ = 450g. a) If a sample of 25 watermelons is taken and a sample mean of 2.7kg is obtained, calculate a 95% confidence interval for the population mean. b) If the mean weight of the watermelons is µ = 3000g, calculate the probability that a sample of four watermelons chosen at random weighs on average between 3000g and 3450g. 00:00 Introduction and tips 00:50 Confidence intervals for the mean solved exercises

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