Mathematics, 26.05.2021 04:40, alisa1600000
The diameter of steel rods manufactured on two different machines is being investigated. Two random samples of sizes and are selected. Sample means and variances are . Round your answers to two decimal places (e. g. 98.76). (a) Construct a 90% two-sided confidence interval on : Enter your answer; 90% confidence interval, lower bound Enter your answer; 90% confidence interval, upper bound (b) Construct a 95% two-sided confidence interval on : Enter your answer; 95% confidence interval, lower bound Enter your answer; 95% confidence interval, upper bound (c) Construct a 90% lower-sided confidence interval : Enter your answer in accordance to the item c) of the question statement
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In the 30-60-90 triangle below side s has a length of and side r has a length
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Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)
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