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Let X represent the number of tires with low air pressure on a randomly chosen car.
1. Let X the number of tires on a randomly selected automobile that are un- derinflated. a). Which of the following three functions, p, f, and g, is a legitimate p.m.f for X, and why are the other two not allowed? p(x) 0.3 0.2 0.1 0.05 0.05 f(x) 0.4 0.1 0.1 0.1 0.3 g(x) 0.4 0.1 0.2 0.1 0.3
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. x 1 P(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1.5 35 (b) Refer to part (a) and calculate PX $ 2.5). (c) Again...
A firm is modeling the uncertainty in its sales. Let X represent the firm's sales. X can be high sales with probability 0.3, medium sales with probability 0.4, or low sales with probability 0.3. Mathematically, P(X = high) = 0.3, P(X = medium) = 0.4, and P(X = low) = 0.3 Let Y be the status of the economy. The conditional probability that the firm's sales are high given the economy is good is 0.7. Mathematically, this is written as...
Let the random variable x represent the number of cars owned by a family. Assume that x can take on five values: 0, 1, 2, 3, 4. A partial probability distribution is shown below: x 0 1 2 3 4 p(x) 0.2 0.1 0.3 ? 0.1 i. The probability that a family owns three cars equals _______ ii. The probability that a family owns between 1 and 3 cars, inclusive, equals _______ iii. ...
On a randomly chosen day , let X be the number of attacks of Snow Miser against Heat Miser, and let Y represent the number of attacks of Heat Miser against Snow Miser. Y=0 5 8 Total X=4 0.20 0.05 0.10 0.35 6 0.25 0.10 0.30 0.65 Total 0.45 0.15 0.40 1.0 a) Find the probability that on a randomly selected day, Snow Miser initiates more attacks than Heat Miser. b) Find PX(x) and PY(y). c) Are X and...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. 1 0.3 2 0.4 3 0.1 4 0.2 p(x) (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1 1.5 2 2.5 3 3.5 4 POCO (b) Refer to part (a) and calculate...
Let x represent the number of times a customer visits a grocery store in a one week period. Assume this is the probability distribution of x: x 0 1 2 3 p(X) 0.1 0.4 0.4 0.1 Find the expected value of x, the average number of times a customer visits the store. 1. 2 2. 0.1 3. 1.5 4. 0.4
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. * 1 p(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X 1 1. 5 2 3.5 PC) 04 125 x 16 X (b) Refer to part...
Problem 13.15 The air pressure in the tires of a 890-kg car is 2.7 x 105 N/m2. Part A Determine the average area of contact of each tire with the road. Express your answer with the appropriate units. A = Value Units Submit Request Answer Provide Feedback
Please answer both questions. Will Rate!! An automobile service facility specializing the next car to be tuned engine tune-ups knows that 50 % of all tune-ups are done on four-cylinder automobiles, 35% on six-cylinder automobiles, and 15% on eight-cylinder automobiles. Let J the number of cylinders (a) What is the pmf of X7 P(x) line araph for the pmf of part (a). (b) Draw Probability Probability 0.5 0.45 0.4 035 0.3 0.5 045 0.4 О35 0.3 0.25 0.25 0.2 0.2...