Question

one-sample 1-confidence interval for a mean Gale is obsessed with creating a reliable method of brewing the perfect cup of coffee. She wants to determine the likely range of weight of whole coffee beans from her trusty two- tablespoon scoop. She measures the weight of a sample of 15 scoops, finding that they average 17 g. one-sample z-confidence interval for a mean Shannon is studying IQ scores, which are normally distributed with a mean of 100. She believes that the mean IQ of classical musical composers is at least 112 and tests this belief with a random sample of 20 composers. one-sample z-test for a mean Jason wants to estimate what the balance of his retirement account will be in one month. All of the money in his account is allocated in an S&P 500 Index Fund. From 1950 to 2015, he calculates this index has had an average monthly return of 0.69% with a standard deviation of 4.15%.

Answer 1

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