The microstructure of an iron carbon alloy consists of proeutectoid ferrite and pearlite; the mass fractions of these microconstituents are 0.22 and 0.78, respectively. Determine the concentration of carbon in this alloy.
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- The Drell Yan process is the production of charged lepton pairs in hadron-hadron collisions, It takes place when a quark from one hadron and an anti-quark from another hadron annihilate to produce a sinigle virtual photon, which subsequently produces a pair of oppositely charged leptons. Estimate the ratio of the Drell-Yan cross-sections o(w*n -u")/o(x*p-+u*). Choose 1 option.A quality engineer in charge of a coffee filter pack production line was concerned about the weight (in grams) of the filter packs being produced. The quality team sampled three packs every hour, throughout the production day. The table below shows the results: Sample number 1 2 3 4 5 6 7 20.6 20.1 20.6 21.5 21.4 21.1 21.4 Weight (g) 21.1 20.0 21.2 22.2 21.1 22.3 20.9 20.7 20.3 21.3 21.4 19.9 19.9 21.1The list of the sampling units utilized in the selecting the sample is called a:
- The following data concern one of the most popular products of XYZ Manufacturing. Estimate the selling price per unit.Required information Alamo Power historically allocates IDC for its safety program to generation facilities in Cities A and B based on the number of employees. Last year, $300,000 was distributed and the employee count was 790 in city A and 450 in city B. Implementation of the ABC method took place this year to allocate IDC on the basis of number of accidents. City A reported 320 events and city B had 142 accidents reported. Determine the allocation based on the number of accidents. The allocation based on the number of accidents is as follows: City A = $191129.03 City B = $ 108870.9The historic average and standard deviation of the percentage moisture content MC of a product is E(MC) = 78.5% and sMC = 10.5%, respectively.The results of a sample of size 5 taken over the last 5 hours included the following 4 data points and the sample average: 81, 74, 83, 66, x̄ = 79 . If the guideline is to maintain the product’s moisture within 1 standard deviation of the historic average, the number of sample values outside these limits is:a. 3b. 2c. 1d. none
- Are these conditions must be met for a Valid instrument?it must be (1) correlated with the included endogenous variable and (2) exogenous.A sample of 50 UNR students was randomly selected. A question asked was about annual cost of driving a car and 50 numbers were collected. (Have you ever calculated how much costs you to drive your vehicle annually? The costs should include DMV registration, insurance, gas ( weekly cost times 52), parking, repair and maintenance, tickets/fines, and depreciation. If you have not, find it out. Often, the number is much higher than what you would think.) The sample variance a. should equal to the population variance. b. would change depending on the students included in the sample. c. should be smaller than the sample mean. d. should be smaller than the sample standard deviation. Ĉ 26. A sample of 50 UNR students was randomly selected. A question asked was about annual cost of driving a car and 50 numbers were collected. (Have you ever calculated how much costs you to drive your vehicle annually? The costs should include DMV registration, insurance, gas (weekly cost times 52), parking,…Hotpot stoves use a standard oven insulation. To test its effectiveness they take random samples from the production line and heat the ovens selected to 400°C, noting the time taken to cool to 350°C after switching off. For a sample of 8 ovens the times in minutes are: 15.7, 14.8, 14.2, 16.1, 15.3, 13.9, 17.2, 14.9 They decide to explore a cheaper insulation, and using this on a sample of 9 the times taken for the same temperature drop are: 13.7, 14.1, 14.7, 15.4, 15.6, 14.4, 12.9, 15.1, 14.0 Are the firm justified in asserting there is no real evidence of a different rate of heat loss? Obtain a 95 per cent confidence limit for the difference in median heat loss (a) with and (b) without a normality assumption. Comment critically on any differences between your conclusions.
- find the point estimate for x = 100 and p = 924 T PRICE (Dollars per ton) 10 20 30 QUANTITY (Thousands of tons) Demand Supply 40 Total Revenue (Thousands of Dollars) Demand -- Supply A number of the growers are concerned about the price decrease initiated by the stretch of favorable weather conditions, as they believe it will lead to decreased revenue. Using elasticities, you will be able to determine whether this price change will lead to a rise or fall in total revenue in this market. Using the midpoint method, the price elasticity of demand for pistachios between the price levels of $15 and $9 per ton is between these two points, demand is Thus, you can conclude that the grower's claim is will due to the favorable weather conditions. meaning that because total revenue Confirm your previous conclusion by calculating total revenue in the pistachio market before and after the favorable weather conditions. Enter these values in the following table Before Favorable Weather Conditions After Favorable Weather ConditionsA time-study technician at the Southern Textile Companyhas conducted a time study of a spinning machine operatorthat spins rough cotton yarn into a finer yarn on bobbins foruse in a weaving operation. The time study was requestedas the result of a union grievance. The average cycle time for the operator to replace all the full bobbins on the ma-chine with empty bobbins was 3.62 minutes. The technician assigned an overall performance rating for the job of 100%,and the allowance factor specified by the union contract is15%. Compute the standard time for this job.