An article considered the use of a uniform distribution with A 0.20 and B4.25 for the diameter X of a certain type of weld (mm)
(a) Determine the pdf of X. (Round your answers to three decimal places.)
(b) What is the probability that diameter exceeds 1 mm? (Round your answer to three decimal places.)
(c) What is the probability that diameter is within 1 mm of the mean diameter? (Round your answer to- three decimal places.)
(d) For any value a satisfying 0.20 < a < a+2 < 4.25, what is P(a < X < a+ 2)? (Round your answer to three decimal places.)
An article considered the use of a uniform distribution with A 0.20 and B4.25 for the diameter X of a certain type of weld (mm)
An article proposes the Weibull distribution with a at a certain site 1.897 and B 0.813 as a model for 1-hour significant wave height (m) (a) What is the probability that wave height is at most 0.5 m? (Round your answer to four decimal places.) 0.3281 (b) What is the probability that wave height exceeds its mean value by more than one standard deviation? (Round your answer to four decimal places.) (c) What is the median of the wave-height distribution?...
1. (50 points) For the probability density function shown below (a) Determine the expected value of X. (b) What is the probability that X is less than 2? (c) What is the probability that X is between 1 and 2? fx(x) _ 2 3 2. (50 points) Suppose that the diameter X of a certain type of weld is uniformly distributed between 0.2 mm and 4.2 mm. (a) Determine and plot the PDF and CDF of X. (b) What is...
An article proposes the Weibull distribution with a 1.817 and B 0.883 as a model for 1-hour significant wave height (m) at a certain site. (a) What is the probability that wave height is at most 0.5 m? (Round your answer to four decimal places.) (b) What is the probability that wave height exceeds its mean value by more than one standard deviation? (Round your answer to four decimal places.) (c) What is the median of the wave-height distribution? (Round...
Suppose the reaction temperature X (in °C) in a certain chemical process has a uniform distribution with A = -7 and B = 7. (a) Compute P(x < 0). (b) Compute P(-3.5 < X < 3.5). (c) Compute P(-4 SX36). (Round your answer to two decimal places.) (d) For k satisfying -7<k<k+ 4 < 7, compute P(k <x<k + 4). (Round your answer to two decimal places.)
An article suggests the lognormal distribution as a model for SO2 concentration above a certain forest. Suppose the parameter values are μ = 2.1 and σ = 1.1. (a) What are the mean value and standard deviation of concentration? (Round your answers to three decimal places.) mean standard deviation (b) What is the probability that concentration is at most 10? Between 5 and 10? (Round your answers to four decimal places.) at most 10 between 5 and 10
The error involved in making a certain measurement is a continuous rv X with the following cdf. x< -2 V F(x) = 3 + 80 11 8x - ) -25x<2 VI VI x (a) Compute P(X<0). (b) Compute P(-1<x< 1). (Round your answer to four decimal places.) (c) Compute P(1.6 <X). (Round your answer to four decimal places.) (d) Evaluate f(x) by obtaining F'(x). f(x) = f'(x) = (e) Compute M. An article suggests the uniform distribution on the interval...
Let X denote the data transfer time (ms) in a grid computing system (the time required for data transfer between a "worker" computer and a master computer) Suppose that X has a gamma distribution with mean value 37.5 ms and standard deviation 21.6 (suggested by the article "Computation Time of Grid Computing with Data Transfer Times that follow a Gamma Distribution,"). (a) What are the values of a and (Round your answers to four decimal places.) B- (b) What is...
Suppose that when a transistor of a certain type is subjected to an accelerated life test, the lifetime X (in weeks) has a gamma distribution with mean 20 weeks and standard deviation 10 weeks (a) What is the probability that a transistor will last between 10 and 20 weeks? (Round your answer to three decimal places.) (b) What is the probability that a transistor will last at most 20 weeks? (Round your answer to three decimal places.) Is the median...
Suppose that when a transistor of a certain type is subjected to an accelerated life test, the lifetime X (in weeks) has a gamma distribution with mean 24 weeks and standard deviation 12 weeks. (a) What is the probability that a transistor will last between 12 and 24 weeks? (Round your answer to three decimal places.) (b) What is the probability that a transistor will last at most 24 weeks? (Round your answer to three decimal places.) Is the median...
Let X denote the amount of space occupied by an article placed in a 1-ft3 packing container. The pdf of X is below. f(x) = 72x7(1 − x) 0 < x < 1 0 otherwise (a) Graph the pdf. Obtain the cdf of X. F(x) = 0 x < 0 0 ≤ x ≤ 1 1 x > 1 (a) Using the cdf from (a), what is P(0.3 < X ≤ 0.6)? (Round your answer to four...