b) What's the density function of a normal model with μ = 1 and o = 2?
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- Computer plot on the same axes the normal density functions with µ = 0 and σ = 1, 2, and 5. Label each curve with its σ.Was confused on how to find the equation of a normal line hereFind the speciffied areas for a normal density. (a) The area above 210 on a N(120, 42.3) distribution Round your answer to three decimal places. Area = i eTextbook and Media (b) The area below 49.4 on a N(50, 0.2) distribution Round your answer to three decimal places. Area = eTextbook and Media (c) The area between 0.7 and 1.4 on a N(1, 0.4) distribution Round your answer to three decimal places. Area = eTextbook and Media
- I can't seem to figure out whether a normal model is appropriate here or not.#4 Find the x for a normal variableTotal 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. (d) Find the sample size necessary for a 99% confidence level with maximal margin of error E = 2.50 for the mean plasma volume in male firefighters. (Round up to the nearest whole number.) ______ male firefighters