CHE110, 3) ENG114, ENG110, or ENG101, 4) WOH102, WOH103, AMH100, EUH210 or AFH100. How many 4-course combinations are possible if he knows that he can't take any of ARH411 and STA101?
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- Researchers at an epidemiology clinic are interested in the difference in the incidence of a number of severe adverse events that occur during a clinical trial between the control and treatment groups. Suppose the following table illustrates the incidences for the most common SAE reported in the population, severe nausea, reported over the course of the 10 year intervention. Total Participants Reporting Severe Nausea Total Participants Control 267 1789 Treatment 485 1024 A) Calculate the risk difference between the groups. B) Conduct a formal test to determine if there is a significant difference in the reports of severe nausea between the two groups. That is, What is your Z stat, p value, and interpret your results. Use an alpha level of 0.05.An investigator wants to test whether exposure to secondhand smoke before 1 year of life is associated with development of childhood asthma (defined as asthma diagnosed before 5 years of age). Give two possible study designs.A prospective cohort study was conducted to assess the impact of a particular environmental exposure. The investigators enrolled 3000 participants, 1000 who had been exposed and 2000 who had not, and followed them for four years. Ten of the exposed participants and 10 of the unexposed participants were diagnosed with leukemia during the study. The risk of leukemia is: 1) Higher in those that were exposed 2) The same for both groups 3) Higher for those not exposed 4) cannot be determined from the information provided
- 10l OA03 16. Tabulate the following: Qut of a total number of 10,000 candidates who applied for jobs in a government department, 6,854 we males, 3,146 were graduates and others, non-graduates. The number of candidates with some uperience was 2,623 of whom 1,860 were males. The number of male graduates was 2,012. The number of graduates with experience was 1,093 that includes 323 females.A producer invents an additive to increase the life of an automobile battery he produces. If the mean lifetime of the automobile battery without the additive is 48 months, then her hypotheses areA producer invents an additive to increase the life of an automobile battery he produces. If the mean lifetime of the automobile battery without the additive is 48 months, then her hypotheses areIn three randomly selected groups of patients (a,b,C) and normal healthy individuals (control group), Serum total Protein (STP) values were measured and their differences, if any, were investigated compared to the control group. The following table shows the STP values measured in 5 randomly selected individuals for each group for this purpose. Accordingly, do the STP values of these individuals differ significantly according to the groups? If there are differences between the groups, find out which groups are different compared to the normal healthy group (control group). A B C NORMAL GROUP 1 8.5 11.7 14.8 6.4 2 9.7 12.8 17.9 6.5 3 12.1 14.9 21.6 6.7 4 9.6 16.3 15 5.9 5 9.4 15.4 12 6
- Suppose a study is conducted using only Boeing 737s traveling 800Kms on comparable routes during the same season of the year. Can the number of passengers predict the cost of flying such routes? It seems logical that more passengers result in more weight and more baggage, which could, in turn, result in increased fuel consumption and other costs. Suppose the data displayed in the table below are the costs and associated number of passengers for twelve 800-kms commercial airline flights using Boeing 737s during the same season of the year. We will use these data to develop a regression model to predict cost by number of passengers. A plot of the data collected is shown in Figure 3. Cost 600 550 500 450 400 350 300 5 6 6 7 7 8 Number of Passengers 8 9 9 10 Figure 3: Scatter plot of number of passengers on the x-axis and Cost on the y-axis. a) Describe the relationship between number of passengers and Cost based on Figure 3.Suppose a study is conducted using only Boeing 737s traveling 800Kms on comparable routes during the same season of the year. Can the number of passengers predict the cost of flying such routes? It seems logical that more passengers result in more weight and more baggage, which could, in turn, result in increased fuel consumption and other costs. Suppose the data displayed in the table below are the costs and associated number of passengers for twelve 800-kms commercial airline flights using Boeing 737s during the same season of the year. We will use these data to develop a regression model to predict cost by number of passengers. A plot of the data collected is shown in Figure 3. Cost 600 550 500 450 400 350 300 5 6 6 7 7 8 Number of Passengers 8 9 9 10 Figure 3: Scatter plot of number of passengers on the x-axis and Cost on the y-axis.A local bank has two branches in a cty: one in the business center of the city and another-in a residential area. The bank's operations manager wants to Improve front-office employee scheduling during the lunch hour (12:00-13:00) period. The manager starts with studying the customer walting times at the two branches and collects data for two groups of 35 customers at each branch. Customers at the business-center branch walted on average 3.8 minutes, whle those at the residential branch waited 4.4 minutes on average, Assume that the population standard deviations are 1.8 (business-center branch) and 2.5 tresidential branch). a. Considering the real-ife problem, determine the point estimate of the unknown quantity that needs to be estimated. (Round to two decimal places.) b. Determine the critical value needed to compute a Bs confidence interval (Round to two decimal places.) c. Compute the confidence interval the operations manager would be interested in computing using the confidence…
- Four different formulations of an industrial glue are being tested. Each of the different formulations were randomly applied to joint parts of five test specimen and the tensile strength of the glue when it is applied to each test specimen is recorded. However, the tensile strength is also related to the application thickness. The data on the strength (in lbs) and thickness (in 0.01 inches) are shown in the following table. Identify the treatment (specify levels), experimental units, concomitant variable, and response variable.A total of 150 participants are selected for a study of risk factors for cardiovascular disease. At baseline (study start), 24 are classified as hypertensive. At one year, an additional 12 have developed hypertension and at 2 years another 8 have developed hypertension. What is the prevalence of hypertension at 2 years in the study?The Human Toxome Project (HTP) is working to understand the scope of industrial pollution in the human body. Industrial chemicals may enter the body through pollution or as ingredients in consumer products. In October 2008, the scientists at HTP tested cord blood samples for 20 newborn infants in the United States. The cord blood of the "In utero/newborn" group was tested for 430 industrial compounds, pollutants, and other chemicals, including chemicals linked to brain and nervous system toxicity, immune system toxicity, reproductive toxicity, and fertility problems. There are health concerns about the effects of some chemicals on the brain and nervous system. The table below shows how many of the targeted chemicals were found in each infant's cord blood. 145 159 151 156 126 79 137 147 160 116 100 ... 83 156 94 121 144 123 114 139 99 Use this sample data to construct the 90% confidence interval estimate for the mean number of targeted industrial chemicals to be found in an infant's…