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Sagot :
Correct answer is C. the number of times blue ball appears is 56
Given,
probability of picking a green ball is 0.5,
the probability of picking a blue ball is 0.4,
the probability of picking a red ball is 0.1.
a ball is picked and replaced = 140
Probability = (the number of ways of achieving success) / (the total number of possible outcomes)
Probability provides information about the likelihood that something will happen. Meteorologists, for instance, use weather patterns to predict the probability of rain. In epidemiology, probability theory is used to understand the relationship between exposures and the risk of health effects.
For this item, the number of times that we should expect that a blue ball is picked should be the product of the number of times and the probability of picking a blue ball (which is equal to 0.4)
= (140)(0.4) = 56
Therefore, we should expect that the blue ball will be picked 56 times.
To learn more about probability from the given link
https://brainly.com/question/2881367
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