A student performed data analysis to determine the relationship between the births attended by skilled staff and the maternal mortality ratio in Brazil. The following is the curve that she generated. What can you say about the relationship of the two variables?
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A student performed data analysis to determine the relationship between the births attended by skilled staff and the maternal mortality ratio in Brazil. The following is the curve that she generated. What can you say about the relationship of the two variables?
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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.In a certain jurisdiction, all students in Grade Three are required to take a standardized test to evaluate their math comprehension skills.The file contains these data resulting from a random sample of n=30 schools within this jurisdiction. From these data you wish to estimate the model Yi=β0+β1Xi+ei where Xi is the percentage of Grade Three students in School i who live below the poverty line and Yi is the average mathematics comprehension score for all Grade Three students in the same school, School i. The observed data for the X variable is labled perbelowpoverty and the observed data for the Y variable is labeled mathscore in the file.Import (either hand type or load the file) data into R Studio, then answer the following questions based on the data.(a) Create a scatterplot of the data. What can you say about the nature of the relationship between the percentage of Grade Three students living below the poverty line in a certain school and the school's average Grade Three…Determine if one-tailed test or two-tailed test fits the given alternative hypothesis. 1. Rexidol and Alaxan FR have the same rate of time of reducing the body pain of patients. Answer: 2. The mean weight of Grade 11 students is less than 55 kilograms. Answer: 3. The enrolment rate of the Elementary school department and secondary school department of ingenium school marikina is not the same. Answer: 4. Male students of an Institution have a higher quotient level of intelligence compare to Female students of the same Institution. Answer: 5. The mean of internet users this year is significantly higher as compared to last year. Answer: (Just put short explanation)
- In a certain jurisdiction, all students in Grade Three are required to take a standardized test to evaluate their math comprehension skills.The attached contains these data resulting from a random sample of n=40 schools within this jurisdiction. From these data you wish to estimate the model Yi=β0+β1Xi+ei where Xi is the percentage of Grade Three students in School i who live below the poverty line and Yi is the average mathematics comprehension score for all Grade Three students in the same school, School i. The observed data for the X variable is labled perbelowpoverty and the obvserved data for the Y variable is labeled mathscore in the .csv file.Import (either hand type or load the file) data into R Studio, then answer the following questions based on the data.(a) Create a scatterplot of the data. What can you say about the nature of the relationship between the percentage of Grade Three students living below the poverty line in a certain school and the school's average Grade Three…The records of a state-owned company indicate that of all vehicles undergoing emissions testing during the previous year, 70% passed on the first test. A random sample of 200 cars tested in the country during the current year reveals that 62% passed the initial test. Does this data suggest that the true proportion for this country is less than the previous countrywide proportion? Test the relevant hypothesis at the 5% level of significance. (d) Determine the critical region(s) for this test. (e) State the conclusion of this test. Give a reason for your answer.How do I construct a time series plot and determine pattern of data? What formula do I use for regression analysis to find the parameters for the line that minimizes MSE for this time series?
- IVP mean initial value problemTrue or false: a) When a process is in a state of statistical control, then most of the output will meet specifications. b) When a process is out of control, an unacceptably large proportion of the output will not meet specifications. c) When a process is in a state of statistical control, all the variation in the process is due to causes that are inherent in the process itself. d) When a process is out of control, some of the variation in the process is due to causes that are outside of the process.At noon time, customers arrive at Metrobank counter managed by a single cashier with mean arrival rate of 6 customers per hour. The cashier attends the customers on first come first served basis at 10 customers per hour.What is the waiting time of a customer in the system?
- 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?3.) a chi square test has been used to test the relationship between gender and support for abortion. The null hypothesis has been rejected. What may be concluded? a. gender and support for abortion are not related b. support for abortion depends on gender c. females are more supportive of abortion d. males are more supportive of abortion 4.) if the distribution of the scores of one variable changes across the values of another variable, the variables: a. are associated to some extend b. have a statistically significant realtionship c. have a cause and effect relationship d. are perfectly associatedStrands of human hair absorb elements from the bloodstream and provide a historical record of both health and the use or nonuse of chemical substances. Hair grows at the rate of about one – half inch per month, and a person with long hair might be accused or absolved on the basis of a segment of hair that sprouted many months or years ago. By separately analyzing sections of the hair strand, scientists can even approximate the periods of time during which drug use was heavy, moderate, light or altogether absent. If a transit employee provides a strand of hair for drug testing, state the null and alternative hypothesis in verbal terms, then identify what would constitute a Type I error and Type II error in this situation.
