Answer Happy

Total plasma volume is important in determining the requiredplasma component in blood replacement therapy for a personundergoing surgery. Plasma volume is influenced by the overallhealth and physical activity of an individual. Suppose that arandom sample of 42 male firefighters are tested and that they havea plasma volume sample mean of x = 35.8 ml/kg (milliliters plasmaper kilogram body weight). Assume that 𝜎 = 7.20 ml/kg for thedistribution of blood plasma. When finding an 98% confidenceinterval, what is the critical value for confidence level? (Giveyour answer to two decimal places.) zc = (a) Find a 98% confidenceinterval for the population mean blood plasma volume in malefirefighters. What is the margin of error? (Round your answers totwo decimal places.) lower limit upper limit margin of error (b)What conditions are necessary for your calculations? (Select allthat apply.) the distribution of weights is normal n is large 𝜎 isknown 𝜎 is unknown the distribution of weights is uniform (c)Interpret your results in the context of this problem. We are 98%confident that the true average blood plasma volume in malefirefighters falls within this interval. We are 2% confident thatthe true average blood plasma volume in male firefighters fallswithin this interval. The probability that this interval containsthe true average blood plasma volume in male firefighters is 0.98.The probability that this interval contains the true average bloodplasma volume in male firefighters is 0.02. (d) Which equation isused to find the sample size n for estimating 𝜇 when 𝜎 is known? n= zc 𝜎 E 2 n = zc E 𝜎 2 n = zc E 𝜎 n = zc 𝜎 E Find the minimalsample size necessary for a 98% confidence level with maximalmargin of error E = 2.00 for the mean plasma volume in malefirefighters. (Round your answer to a whole number.) malefirefighters