For a laboratory assignment, if the equipment is working, the density function of theobserved outcome X is as shown below. Find the variance and standard deviation of X.f(x)= 8f1(4-x),(4-x), 0 The total time, measured in units of 100 hours, that a teenager runs her hair dryer overa period of one year is a continuous random variable X that has the density functionbelow. Use the theorem below to evaluate the mean of the random variableY = 69X² + 43X, where Y is equal to the number of kilowatt hours expended annually.Theorem: The expected value of the sum ordifference of two or more functions of a randomvariable X is the sum or difference of theexpected values of the functions, as given by theformula below.E[g(X,Y) ±h(X,Y)] = E[g(X,Y)] ± E[h(X,Y)]f(x)=X,490

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Answered: For a laboratory assignment, if the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 43 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 σ = 7.50 ml/kg for the distribution of blood plasma. (a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error? (Round your answers to two decimal places.) lower limit 1 upper limit 2 margin of error 3 (b) What conditions are necessary for your calculations? (Select all that apply.) n is large the distribution of weights is normal σ is known the distribution of weights is uniform σ is unknown (c) Interpret your results in the context of this problem. 1% of the intervals created using…
Suppose X is a random variable defined as final cost of project estimated cost of project which has a PDF as follows: [0 xa a. Determine the value of a. b. What is the probability that the final cost of a project will exceed its estimated cost by 25%? c. Determine the mean value and standard deviation of X.
With an American penny, the likelihood of getting H when it is spun on edge is 0.3. If X is the random variable where X(H ) = 1, X(T ) = −1, find the expected value E(X), the variance, Var(X), and express X in its standard form.
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Please solve this question.Thanks for your help :)
Suppose the random variable X has the following PDF: 2 √2π This distribution is often called half-normal. Find E(X) and V(X). f(x) = , for x > 0.
A density curve consists of the line segment connecting the points (0,1) and (0.5,1) and the segment connecting(0.5, 1) to the x-axis.a. Determine the coordinate point where the second segment crosses the x-axis.b. Determine the slope of that segmentc. Determine the equation of the line containing this segment (y = mx + b)d. Calculate the probability P(X > 1)
Q2. The duration of a construction activity was estimated to be in the range [2, 6] days with a most likely duration of 4 days. A construction engineer used the following symmetric density function to model the duration: fx(x) = 12 8 12 X 12' for 2 ≤x≤4 for 4 ≤x≤6 Determine the (a) mean, (b) variance, (c) standard deviation, (d) coefficient of variation, and (e) skewness.
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For a laboratory assignment, if the equipment is working, the density function of the observed outcome X is as shown below. Find the variance and standard deviation of X. (1) DEY 0