The following random sample was selected from a normal distribution: 7 9 17 14 15 14 20 15 6 2 (a) Construct a 90% confidence interval for the population mean u. 6.1729

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A: Note: Hey there! Thank you for the question. As you have posted multiple sub-parts, we have helped…

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Q: a. develop a 95% confidence interval for the difference between two population means b. Is there…

A: n1 = 28n2 = 30 x1 = 24x2 = 22 s1 = 8s2 = 6

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Q: 14. Based on these results, a 95% confidence interval for . the coefficient of the variable $ Per…

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Q: 1. A sample of size n = 121 produced the sample mean of ī = 30. Assuming the population standard…

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A: As per company guidelines I solved exactly three subparts of the question.thank you