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- Ten replicate analysis of the concentration of mercury in a sample of commercial gas condensed to give the following results 23.3 , 22.5 , 21.9 , 21.5, 19.9 , 21.3 , 21.7 , 23.8 , 22.6 , 24.7 Calculate the mean, standard deviation, RSD and 99% confidence limitA chemical engineer desiring to study the evaporation rate of water from brine evaporation beds obtained data on the number of inches of evaporation in each of 55 July days spread over 4 years. The data are given in the following stem and leaf plot, which shows that the smallest data value was 0.02 inch, and the largest 0.56 inch. Stem Leaf 0.0 2, 6 0.1 1, 4 0.2 1, 1, 1, 3, 3, 4, 5, 5, 5, 6, 9 0.3 0, 0, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 8, 9 0.4 0, 1, 2, 2, 2, 3, 4, 4, 4, 5, 5, 5, 7, 8, 8, 8, 9, 9 0.5 2, 5, 6 Find the: a) sample mean; b) sample median; c) sample standard deviation of these data. d) Do the data appear to be approximately normal? e) What percentage of data values are within 1 standard deviation of the mean?A bottle filling operation in a manufacturing facility fills 16 oz. water bottles is uniformly distributed with α = 15.750 oz. and β = 16.250 oz. What is the probability that a sample taken will weigh between 15.805 oz. and 16.015 oz.?
- To estimate the mean age for a population of 4000 employees, a simple random sample of40 employees is selected.a. Would you use the finite population correction factor in calculating the standard errorof the mean? ExplainMaterials of Interest: CuFeS, in a silica matrix, 1.5% Cu (4.3318% CuFeS,); Top Size = 1.5 cm; CuFeS, grain size = 0.01 cm Desired sampling accuracy: +0.02% Cu, certainty of 0.99 (2.576 standard deviations) CuFeS, specific gravity=4.2: Overall specific gravity 2.8 Broad size distribution. Determine the minimum sample weight (in grams) needed for testing.Each main bearing cap in an engine contains four bolts. The bolts are selected at random,without replacement, from a parts bin that contains 30 bolts from one supplier and 70 boltsfrom another.(a) What is the probability that a main bearing cap contains all bolts from the samesupplier?
- Flow Characteristics (Entrance flow) Why was not the linear regression applied to all of the data?(it shouldnot have needed to be applied to all data?How would you determine the manipulated and controlled variable for a process? Give one example.1.Calculate Mean ,Median ,standard deviation and variance for measurement sets A, B and C SET A :398 ,420, 394, 416, 404, 408 ,400, 420 ,396, 413 ,430. • SET B:409 406 402 407 405 404 407 404 407 407 408 SET C:409 406 402 407 405 404 407 404 407 407 408 406 410 406 405 408 406 409 406 405 409 406 407
- 5.2 Evaluate the Prandtl number from the following data: , .Needs Complete typed solution with complete explanation and 100 % accuracy.Given: N=3,000, n1=200, c1=10, r1=14, n2=300, c2=20, r2=21. Write the formula of the probability of acceptance. If a certain lot with 2.0 % non-conforming, what is the probability of rejecting the lot during the second sampling?