-6. Referring to (1–6), consider a communication system with the following values fom ferent probabilities: P(Y = 0LX = 0) = 0.7 P(Y = 0LX = 1) = 0.1 P(Y = 1X = 0) = 0.3 P(Y = 1X = 1) = 0.9 P(X = 0) = 0.4; P(X = 1) = 0.6 (a) Find the probabilities P(Y = 0) and P(Y = 1) at the channel output.
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- 4.1. Walton's production line produces a variable number of defective parts in an hour, with probabilities shown in this table: 1 3 4 Total P(X) 0.10 0.30 0.45 0.15 1 How many defective parts are expected to be produced in an hour on Walton's production line?5. The random variable X, representing number of errors per 100 lines of software code, has the following probability distribution: 3 4 6. f(x) 0.05 0.23 0.4 0.02 0.3 Find the mean of g(X) given g(X) = (2X – 5)i need detailed solution
- Rohan appeared in a job interview for the position of a Portfolio Analyst. The interviewer asked jim - Assume that a group of securities has the following characteristics:(a) the standard deviation of each security is equal to σA ; (b) covariance of returns σ AB is equal for each pair of securities in the group. What is the variance of a portfolio containing six securities which are equally weighted?In a random sample of 500 clerical employees from a large multinational company, 300 said they would like the company to adopt a flexible scheduling policy, which would permit employees to decide when and how much they would work. Construct a 90% confidence interval to estimate the population proportion of clerical employees favouring the flexible scheduling policy. Explain briefly how the confidence interval should be interpreted.4
- A weight-loss program wants to test how well their program is working. The company selects a simple random sample of 51 individual that have been using their program for 15 months. For each individual person, the company records the individual's weight when they started the program 15 months ago as an x-value. The subject's current weight is recorded as a y-value. Therefore, a data point such as (205, 190) would be for a specific person and it would indicate that the individual started the program weighing 205 pounds and currently weighs 190 pounds. In other words, they lost 15 pounds. When the company performed a regression analysis, they found a correlation coefficient of r = 0.707. This clearly shows there is strong correlation, which got the company excited. However, when they showed their data to a statistics professor, the professor pointed out that correlation was not the right tool to show that their program was effective. Correlation will NOT show whether or not there is…For RBD topology 1, the independent component working probabilities are P(A)0.83, P(B)-0.73, PIC)0.45, PID0.66, P(E0.83. What is the probability that the system will work? Your answer: O 0.382043 O 0.520173 O 0,436623 O 0.929271 O 0.903641 O 0.152346 O 0,952901 O 07283275. Suppose that a student attending a class has an infectuous disease. Suppose that with probability 1/2 she does not infect anybody, with probability 1/4 she infects exactly one other person, and with probability 1/4 she infects exactly two people. Let X be the number of people infected by this student. Calculate the expectation and the variance of X.
- 1. Suppose that in the AOA building, we observe the presence of nine people at work. Overall on campus, 85 percent of people wearing masks while working. 1 (a) What is the probability that exactly 3 people in AOA are wearing a mask. (b) What is the probability that at least two people in AOA are not currently wearing a mask? (c) Compute the range-rule-of-thumb interval (µ – 20, µ+20) for the number of people that are wearing a mask. (d) Compute the coefficient of variation for the number of people that are wearing a mask.(c) A factory produces two types of artificial lamp A and B. The mean durability of artificial lamp A is 850 hours and its standard deviation is 40 hours. While, mean durability of artificial lamp B is 820 hours and its standard deviation is 60 hours. Find the probbality of 35 artificial lamp A will have mean durabilirty at least 25 hours more than 45 artificial lamp B.A congressional committee is composed of 10 members: 6 Republicans and 4 Democrats. On any given vote, members vote independently. Whereas Republicans always vote their party line, Democrats vote their party line with probability .8, and vote Republican with probability .2. On a rainy day only 3 committee members (selected w/o replacement) were present. Let X = number of Democrats present Y = Number who voted Democratic that day Display the table of joint probabilities fX,Y(i,j) for 0 ≤ j ≤ i, for i=0,1,2,3. We can say that p(i,j)=P[x=i, Y=j].