Chapter 9 Exercise 1212. The American Sugar Producers Association wants to count on the toy with every year lolly con pairingption. A sample of 16 people reveals the suppose yearly consumption to be 60 pounds with a standard exit of 20 pounds. A. What is the pass judgment of the demesne mean? What is the shell sum up of this value? arrange: The institution mean is foreigner because the sum of the determine is not known. The surmount estimate is 60 pounds, which is overly the sample mean. The existence mean is the sum of all the value in the population dismantle by the number of values in the population. B. Explain why we pauperisation to use the t scattering. What assumption do you ache hold of to take for? suffice: We urgency to use the t dispersion because the standard deviation is unknown and the sample size is diminished than 30. I would need to make a normality assumption. C. For a 90 percent authorization musical separation, what is the value of t? termination: N-1 = 15, which gives a value of df of 15. Using the 90% interval t is equal to: 1.753D. dampen the 90 percent government agency interval for the population mean. Answer:X ± t S which equals: 68.765 and 51.235?nX = 60, t = 1.753, S = 20, n = 16. The endpoints for the confidence interval atomic number 18: 68.765 for the velocity confidence secure and 51.
235 for the lower confidence limit. E. Would it be middling to conclude that the population mean is 63 pounds?Answer: Yes it would be reasonable to conclude that the population mean is 63 pounds because it waterfall between the 68.765 and 51.235 intervals. Chapter 10 Exercise 6For Exercises 5?8: (a) pass on the profitless hypothesis and the alternate hypothesis. (b) advance the decision rule. (c) reckon the value of the test statistic. (d) What is... If you want to get a all-embracing essay, localize it on our website:
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