What is the probability that balls came from urn two
one of two urns is chosen at radom. Then a ball is chosen from that urn. Urn 1 contains 1 white balls and 3 red balls. urn 2 contains 2 white and 2 red. If a white ball is drawn what is the probability that is came from urn 2?
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How many different eight-note melodies within a single octave can be written if the black keys and white keys need to alternate?
Construct a 95% confidence interval for the mean and provide a description of the meaning of the confidence interval.
A financial analyst is studying two packaging systems, basic and Deluxe, the basic system has variable operating costs of $ 6 per unit and annual costs of $ 600,000.
A property manager thinks that the average rent for one-bed room flat his city has gone up to AED 6000 per month. He took a sample of 60 flats and found out that the sample mean was AED 6015 and sample standard deviation was 40.
Then a ball is chosen from that urn. Urn 1 contains 1 white balls and 3 red balls. urn 2 contains 2 white and 2 red. If a white ball is drawn what is the probability that is came from urn 2?
The rate per mile reflects the fact that more miles result in more gas, oil, and maintenance. The rate per truck hour reflects the fact that trucks that are waiting at a jobsite are kept running (so the concrete mix won't solidify), and drivers co
a. Interpret the slope in the context of the problem. b. Evaluate the overall fit of the model.
5% of car made at plant A have a malfuction. what is the probability that the car was manufactured at plant A and has a defect?
The 4 Canon operators are paid $8.10 an hour each. They work a 39-hour week and 50 weeks a year. The machines break down periodically, resulting in annual repair costs of $960 for each machine. Supplies cost $960 a year for each machine.
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