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- If a process in a factory is in a state of statistical control it means that it is unstable. True OFalseThe Journal of American Medical Association published a study that examined a sample of pregnancies that resulted in the birth of twins. Births were classified as preterm with intervention (induced labor or cesarean), preterm without such procedures, or term or post term. Researchers also classified the pregnancies by the level of prenatal care the mother received (inadequate, adequate or intensive.) The data is summarized below. Figures are in thousands of births. Is there evidence of an association between the durations of the pregnancy and the level of care received by the mother? Preterm with procedures Preterm without procedures Term or post term Total Intensive 18 15 28 61 Adequate 46 43 65 154 Inadequate 12 13 38 63 Total 76 71 131 278True 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.
- h.w The EFISCEN wOod product model classifies wood products according to their life- span. There are four classifications: short (1 year), medium short (4 years)., medium long (16 years), and long (50 years). Based on data obtained from the European For- est Institute, the percentage of remaining wood products after t years for wood prod- ucts with long life-spans (such as those used in the building industry) is given by 100.3952 P(1) = 1 + 0.0316e0.0581 (a) What is the decay rate? (b) What is the percentage of remaining wood products after 10 years? (c) How long does it take for the percentage of remaining wood products to reach 50%? (d) Explain why the numerator given in the model is reasonable.Q5 a) Demographic data from 126 countries is obtained for the year 2017. It is hypothesized that life expectancy (Y) is dependent on number of under five deaths (X2) , polio immunization coverage (D), Per capita Govt. Exp. on Health Care (X3) (in Rs crores), Per Capita GNI (in Rs crores) (X4) and Average number of years of Schooling (Xs). Polio immunization coverage =1 if yes and 0 otherwise. Following regressions were estimated: MODEL 1: = 0.903 – 0.561X2¡ + 2.008 X3i + 0.553X4¿ + 0.778 X5i + 3.638 D (0.405) se = (1.280) (0.765) (0.712) (0.491) R? = 0.787 RSS = 1339.8 MODEL 2: P, = 1.379 + 0.594 X31 + 2.139 D se = (0.406) (0.465) R? = 0.677 RSS = 1567.28 i. Is it a time series or a cross sectional data ii. Show model 2 is a restricted version of model 1 and what is the restriction? iii. Test for the statistical significance of the restriction at 5% level. iv. Construct a 95% confidence interval for true per capita government health expenditure in model II and check whether it is…Twins. There is some indication in medical litera-ture that doctors may have become more aggressive in inducing labor or doing preterm cesarean sections whena woman is carrying twins. Records at a large hospitalshow that, of the 43 sets of twins born in 1990, 20 weredelivered before the 37th week of pregnancy. In 2000, 26of 48 sets of twins were born preterm. Does this indicatean increase in the incidence of early births of twins? Testan appropriate hypothesis and state your conclusion.
- Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Calculate the pooled variance for the data.Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Calculate the sum of squares of injuries for women.Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Calculate the effect size using cohen's d.
- Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Calculate the estimated standard error for the data.Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Determine the total degrees of freedom.Anterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 What is the difference between a repeated measure study and a matched pairs study?