15. (8 pts) The following data represent partial pressure of CO2 and the related respiration rates for males and females. Provide a research quality analysis of these data. Please justify your choice of analysis. Partial pressure CO₂ 30 32 34 36 38 40 42 44 46 48 50 Respiration Rate (breath/min) Men 8.12 8.93 9.93 11.25 11.00 13.25 14.65 16.63 16.71 18.31 18.00 Respiration Rate (breath/min) women 7.95 8.55 8.96 9.48 9.41 10.28 10.84 11.24 11.68 12.32 12.28
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- Trace metals in drinking water affect the flavor and an unusually high concentration can pose a health hazard. Ten pairs of data were taken measuring zinc concentration in bottom water and surface water. The raw data provided in table below. Does the data suggest that the true average concentration in the bottom water exceeds that of surface water? Use ?=0.01.Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of thesame make and model. The extended data table (left) and fit model report (right) are based on aquadratic model What is the predicted average mileage at tire pressure x = 31?Variable | Obs Mean Std. Dev. Min Маx earnings | e1000 | 41412.69 25527.05 1050 1.05 172000 41.41269 25.52705 172 regress e1000 education Source | SS df MS Number of obs F(1, 169) Prob > F 68.86 Model Residual 32068.6617 32068.6617 0.0000 169 465.730862 R-squared Adj R-squared Root MSE 0.2853 Total | 110777.177 170 651.630455 e1000 | Coef. Std. Err. P>|t| [95% Conf. Interval] 0.000 6.215653 5.021123 31.05591 education 8.30 3.826593 cons 8.887835 -3.49 0.001 -13.51044 Please fill in the boxes below with the missing Stata output values. If needed, please round your answers to 3 decimal places. Number of observations (integer) 78708.515 RSS (4 decimal places) R squared (4 decimal places) Std. Err. for slope
- 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 50 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 ? = 7.20 ml/kg for the distribution of blood plasma. I need help with part B and DTotal 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 o health and physical activity of an individual. Suppose that a random sample of 46 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 = 7.80 ml/kg for the distribution of blood plasma. %3D (a) Find a 99% confidence interval for the population mean blood plasma volumne in male firefighters. What is the margin of error? (Round your answers to two decimal places.) lower limit upper limit margin of error (b) What conditions are necessary for your calculations? (Select all that apply.) the distribution of volumes is normal the distribution of volumes is uniform o is unknown n is large o is known (c) Interpret your results in the context of this problem. O The probability that this interval contains the true average…Wastewater and industrial pollutants discharged into water sources can lower the dissolved oxygen content of the water and adversely affect aquatic species. In one study, measurements were made at one-week intervals from the same point of a river for 2 months. week dissolved O2 ppm 1 4,9 2 5,1 3 5,6 4 4,3 5 4,7 6 4,9 7 4,5 8 5,1 Some scientists consider a concentration of 5.0 ppm for dissolved O2 to be the lower limit of the level required for fish to survive. Test if the average dissolved O2 concentration is less than 5.0 ppm by performing a statistical test. State clearly the null hypothesis and the alternative hypothesis.
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