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- 10) Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of circuits are defective because of "undercutting", which occurs when too much material is etched away so that the channels, which consist of the unetched portions of the wafers, are too narrow. A redesigned process, involving lower pressure in the etching chamber, is being investigated. The goal is to reduce the rate of undercutting to less than 5%. Out of the first 1000 circuits manufactured by the new process, only 32 show evidence of undercutting. If someone asks you the question "Can you conclude that the goal has been met?", what is the p-value that you'll report? Round the answer to four decimal places.True/False Censoring occurs when the event of interest (e.g., disease status) is observed on every individual, usually due to time constraints. The incidence rate (IR), is computed by taking the ratio of the number of new cases of disease to the total number of person-time units available. The prevalence of a disease depends on the incidence of the disease as well as the duration of the disease.What proportion of male growth plates fuse between 16 and 17 years of age? The proportion of male growth plates that fuse between 16 and 17 years of age i
- Using a chi square determine if there is an association between the smoking status of mothers and colic among infants. Show all steps in the statistical procedure and provide the p-value for the test statistic Let α = 0.05.Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of circuits are defective because of “undercutting,” which occurs when too much material is etched away so that the channels, which consist of the unetched portions of the wafers, are too narrow. A redesigned process, involving lower pressure in the etching chamber, is being investigated. The goal is to reduce the rate of undercutting to less than 5%. Out of the first 1000 circuits manufactured by the new process, only 35 show evidence of undercutting. Can you conclude that the goal has been met?Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 44 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that o = 8.00 ml/kg for the distribution of blood plasma.
- A factory produces furniture as the main product. One of the major components of the furniture product is a steel bar with the specification of the length at 1,250 mm with +/- 10% tolerance. Based on historical records, the average demand for steel bars is 1,000 units per month. The factory receives two quotation prices from two independent suppliers along with the quality control records from their production process of the steel bars as below: (refer to table image) Anticipating that a portion of the steel bars delivered will fall outside the specification limits, the factory is prepared to cut steel bars that are too long, while those that are too short will have to be discarded. Based on the above information, answer the following questions: a. Provide your assessment on the capabilities (based on their capabilities index) of the two suppliers as well as their estimated percentage of defective products against the factory’s specification of the steel bars. b. Which of the two…calculate chi square test static, chi square critical value and p value.Incidence rate in the last influenza epidemic was found to be 50 per thousand (5%) of the population exposed. What should be the size of sample to find incidence rate in the current epidemic if allowable error is 0.005 and 0.01?
- The economic dynamism, which is the index of productive growth in dollars for countries that are designated by the World Bank as middle-income are in table #7.3.8 ("SOCR data 2008," 2013). Countries that are considered high-income have a mean economic dynamism of 60.29. Do the data show that the mean economic dynamism of middle-income countries is less than the mean for high-income countries? Test at the 5% level (Show the work) 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643Gram Schmidt processExact reducible