The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. xf(x)10.1042 30.31240.24050.09860.017 13If you doubled each number of days to completion in the Days (x) column, the variance of days to completion will be _________. a5.710 b4.758 c3.965 d2.855

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Answered: The table shows the probability…

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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The following table shows the probability function for the random variable X, number of wingbeats per second of certain species of large moths while in flight. Find the table for the cumulative distribution function The probability that the number of beats per second is less than or equal to 8 is Answer
The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. x f(x) 1 0.104 2 3 0.312 4 0.240 5 0.098 6 0.017 5 The probability that it will take more than 2 days to complete the project is _________. a 0.722 b 0.694 c 0.667 d 0.641
Find the probability of the indicated event if P(E) = 0.25 and P(F) = 0.35. Find P(E or F) if P(E and F)= 0.20. P(E or F) =| (Simplify your answer.)
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The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. x f(x) 1 0.104 2 3 0.312 4 0.240 5 0.098 6 0.017 10 If you added 2 days to each value in the Days (x) column, the expected value of days to completion will be _________. a 4.646 b 5.050 c 5.489 d 5.966
An automotive center keeps track of customer complaints received each week. The probability distributions of complaints are shown below. The random variable, xi, represents the number of complaints, and p(xi) is the probability of receiving xi complaints for two of the stores. The cost impact of each complaint is believed to be y=$10x3 where x is the number of complaints. Store A xi 0 1 2 3 4 5 6 p(xi) 0.10 0.15 0.20 0.25 0.15 0.10 0.05 Store B xi 0 1 2 3 4 5 6 p(xi) 0.10 0.15 0.25 0.22 0.13 0.08 0.07 Sample from these distributions to compute the total number of complaints (store A+B) per week for 52 weeks.
The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. x f(x) 1 0.104 2 3 0.312 4 0.240 5 0.098 6 0.017 8 The variance of the days to complete the project is ________. a 1.665 b 1.542 c 1.428 d 1.322
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In the table below x denotes the X-Tract Company’s projected annual profit (in $1,000). The table also shows the probability of earning that profit. The negative value indicates a loss. x f(x) x = profit -100 0.01 f(x) = probability -200 0.04 0 100 0.26 200 0.54 300 0.05 400 0.02 14 If we quadruple each value in the profit column above, the new variance of profit will be. a 187,136 b 183,467 c 179,870 d 46,784

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13	If you doubled each number of days to completion in the Days (x) column, the variance of days to completion will be _________.

a	5.710
b	4.758
c	3.965
d	2.855

x	f(x)
1	0.104
2
3	0.312
4	0.240
5	0.098
6	0.017