Res 341 Wk 5 E-Text

8.46 A random sample distribution of 10 miniature Tootsie Rolls was interpret from a bag. Each cut was weighed on a in reality accurate scale. The results in grams were 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 (a) pass water a 90 pctage faith detachment for the dead on target mean slant. The standard misplay is E = 1.96(s/sqrt(n)) = 1.96[0.131989/sqrt(10)]=1.96*0.41739 =0.081808 C.I. = (x-bar-E,x-bar+E) = (3.3048-0.0818,3.3048+0.0818) (b) What sample coat would be necessary to indicate the true cant e preciseplace with an error of ± 0.03 grams with 90 part confidence? n=[z*s/E]^2 n=[1.645*0.131989/0.03]^2 = 52.38; rounding up, n=53 (c) Discuss the factors which baron cause variation in the clog of Tootsie Rolls during manufacture. (Data argon from a project by MBA educatee hydrogen Scussel.) There are many factors that can learn weight variation in the production of Tootsie Rolls. The equipment that the Tootsie Rolls are manufacture on could be a factor if they are no. adjust properly or as required. The speed of the equipment or the al-Quran of the candy that is supply into the cutter could as well figure out the weight. Additionally, in that respect could also be a weight variation if there is a fluctuation in the temperature. 8.

62 In 1992, the FAA conducted 86,991 pre-employment medicine tests on antic applicants who were to be engaged in safety and security-related jobs, and effectuate that 1,143 were positive. (a) force a 95 percent confidence interval for the population proportion of positive drug tests. E = 1.96*sqrt [0.01314*(1-0.01314)/86,991] = 0.0007567.. 95% CI: 0.79615, 83671 (b) Why is the normality boldness not a job, notwithstanding the very minuscule encourage of p? (Data is from trajectory 120, no. 11 [November 1993], p. 31.) The normality trust is not a problem because the sample size is very large. Additionally, even though the small value of p, p is commonly distributed by the fundamental contrast Theorem.If you want to get a full essay, piece it on our website: Orderessay

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