In a water treatment plant, 24 raw water tanks are used to hold untreated water pumpedfrom a nearby source. Four tanks are selected at random and without replacement forgeneral water characterization tests in the laboratory. Suppose that six tanks containwater with elevated levels of carbonates.Answer the following questions1. What is the probability that exactly one tank in the sample contains water withhigh carbonate level?2. What is the probability that at least one tank in the sample contains water withhigh carbonate level?3. It was later found out that aside from the six tanks with high carbonate levels, fourother tanks (different from the 6, but part of the 24 tanks) contain water with highconcentration of dissolved solids. What is the probability that there is exactly onetank that contains high carbonate level and exactly one tank that contains highconcentration of dissolved solids among the samples chosen?

According to rule of combination, the number of ways to select r objects out of total n objects is…

Answered: In a water treatment plant, 24 raw…

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 fraction of a large population that has a specific blood type T is .08 (8%). For blood donation purposes it is necessary to find 4 people with type T blood. If randomly selected individuals from the population are tested one after another, then (a) What is the probability y persons have to be tested to get 5 type T persons, and (b) What is the probability that over 80 people have to be tested?
what is the correct answer for the problem in the image?
Electrical engineers recognize that high neutral current in computer power systems is a potential problem. A survey of computer power system load currents at U.S. sites found that 10% of the sites had high neutral to full-load current ratios (IEEE Transactions on Industry Applications). If a random sample of five computer power systems is selected from a large number of sites in the country, what is the probability that exactly three will have a high neutral to full-current load ratio?
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ovil 2 zllorow 4. alled do 23. Celebrities as Role Models In a sample of 1000 U.S. adults, 200 think d A At ooloe betn that most Hollywood celebrities are good role models. Two U.S. adults are Tru selected at random without replacement. (Adapted from Rasmussen Reports) (a) Find the probability that both adults think that most Hollywood celebrities are good role models. ial (b) Find the probability that neither adult thinks that most Hollywood celebrities are good role models. .52692 (c) Find the probability that at least one of the two adults thinks that most Hollywood celebrities are good role models.
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1. Power companies severely trim trees growing near their lines to avoid power failures due to falling limbs in storms. Applying a chemical to slow the growth of the trees is cheaper than trimming, but the chemical kills some of the trees. Suppose that one such chemical would kill 20% of sycamore trees. The power company tests the chemical on 250 sycamores. Consider this a SRS from the population of all sycamore trees. Calculate the probability that less than 24% of the tress in the sample are killed. (Hint: Shape, Center, Spread, Curve, Calculations, Conclusion....)
Question 15 You want to measure traffic on the Lake Lewisville Toll bridge during the late evening. Select all the discrete random variables (there may be more than one). The number of cars that use the bridge in one hour. The time between each car crossing the bridge. The time each car crosses the bridge. The total number of cars that cross the bridge. Submit Question Search €0 W
1. In a factory that produces pieces of ready-made concrete, if the percentage of production of defective blocks is 0.6, if we draw a sample of 5 pieces: find the probability of getting 3 defective pieces. *
Suppose that 30 percent of an adult population have an infectious disease and 40 percent have achronic disease. Assume that having an infectious disease is independent from having a chronicdisease. For each of the questions below perform the calculation using appropriate statisticalnotation.a. What is the probability that a person selected at random will have both diseases?b. What is the probability of having the infectious disease for people with the chronic disease?c. What is the probability of having the infectious disease for people without the chronic disease?d. What is the probability of not having the infectious disease for people with the chronicdisease?
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