The lifetime X of a widget has a Weibull distribution with parameters a = 2 and B = 5.The mean widget lifetime is E[X] = 4.43. The standard deviation of the lifetime is StDev(X) = 2.316.What is the probability the widget lasts between 2.6 and 5.2? P( 2.6 < X < 5.2 ) =Express your answer as a proportion rounded to 4 decimal places.

The mean is 4.43 and standard deviation is 2.316.

Answered: The lifetime X of a widget has a…

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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Scores on a dental anxiety scale range from 0 (no anxiety) to 20 (extreme anxiety). The scores are normally distributed with a mean of 11 and a standard deviation of 4. Find the z-score for the given score on this dental anxiety scale. 16 Z16 (Type an integer or a decimal.)
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 0.6 The indicated la score, x, is。(Round to one decimal place as needed )
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H0:μ=16.87H1:μ>16.87 Your sample consists of 46 subjects, with a mean of 17.9 and standard deviation of 4.26.Calculate the test statistic, rounded to 2 decimal places. t=
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Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 2 The indicated IQ score, x, is. (Round to one decimal place as needed.) W S X H Saladin_25_Ext.pdf mand # 3 8.0 F F3 E D C $ 4 a FA R F Saladin9eAccess....pdf % 5 V T G 6 A B MacBook Air FO D Y H PBSC A&P 2 La....pptx & 7 8 F? U C... N 8 J DII FB 1 M Q PBSC A&P 2 La.....pptx ( 9 K O > O < I дв L F10 P Clear all command ; { = [ Check answer ? option 0.9 Show All 24 DO x I 1 \ del
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Testing:H0:μ=38.5H1:μ<38.5Your sample consists of 35 subjects, with a mean of 38.3 and a standard deviation of 1.93.Calculate the test statistic, rounded to 2 decimal places. t =
The table below shows the summary statistics of the sales ($) made by company ABC in 2022. No. of month 12 134,562 135,000 48,997 95,000 185,000 90,000 Mean Median S.D Minimum Maximum Range The monthly profit should be adjusted by multiplying 0.88 then subtracting $30,000. Without calculating the profit for each month, find the new standard deviation of profit for 2022? (2 d.p.)
Consider the following data find the value of P(X_>-2).Round your answer to one decimal place
Mean (E(x)) = np St. dev=Given the number of trials and the probability of success, find the mean, standard deviation1.n =12, p = 0.22. n = 20, p = 0.5In addition, find the indicated probabilities3. n =11, p = 0.05, find P(3 failures)4. n = 6, p = 0. 35, find P(at least 3 successes)5. A basketball player has a 60% chance of making each free throw. What is the probability that the player makes exactly three out of six free throws?6. The manufacturing sector contributes 17% of Canadas gross domestic product. A customer orders 50 components from a factory that has a 99% quality production rate (99% of the products are defect-free). Find the probability that:a) none of the components in the order are defectiveb) there is at least one defective product in the order.c) There are at least two defective products in the order.d) Expected number of defective parts.7. Approximately 3% of the eggs in a store are cracked. If you buy two dozen eggs, what is the probability thata) none of your eggs…
Q life time of led follow exponential distribution with mean life of 5000 burning hours. if one such LED is selected at random from a big lot, what is the probability that it will last for 1. at least 4000 hours 2. almost 10000 hours Also state the standard deviation of the life time distribution. Given e raised to -0.8 is 0.4493 and e raised to -2 is 0.1353

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