5272道题目5525 条题源记录 · 相同内容已合并
概率与条件概率进阶
Each of 174 power tools can be classified as one of three types, as shown in the frequency table.
If one of the power tools is selected at random, what is the prohability of selecting a power tool of type Y?
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概率与条件概率进阶
A sleep study consisted of 77 participants, of which 69 participants each had an average of more than 120 minutes of rapid eye movement (REM) sleep per night. If a participant from this sleep study is selected at random, what is the probability of selecting a participant that had an average of more than 120 minutes of REM sleep per night?
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概率与条件概率进阶
A bin contains a mixture of T-shirts for two sports teams. The table shows the number of T-shirts in the bin, classified by size and sports team.
One T-shirt from the bin will be selected at random. What is the probability of selecting a T-shirt that is medium, given that the T-shirt is a Flames T-shirt?
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概率与条件概率进阶
The table summarizes members of a local organization by age and whether they live north or south of Center St. If a member of the organization is selected at random, what is the probability that the selected member is at least 45 years old?
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概率与条件概率挑战
The given table shows the number of even and odd integers contained in list A and list B. No integer is contained in both lists. What fraction of the even integers represented in the table are in list A?
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概率与条件概率进阶
Each face of a fair 12-sided die is labeled with a number from 1 through 12, with a different number appearing on each face. If the die is rolled one time, what is the probability of rolling a 2?
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概率与条件概率进阶
At a convention center, there are a total of 250 visitors. Each visitor is located in either room A, room B, or room C. If one of these visitors is selected at random, the probability of selecting a visitor who is located in room A is 0.44, and the probability of selecting a visitor who is located in room B is 0.32. How many visitors are located in room C?
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概率与条件概率挑战
The table shows the distribution of people in a certain city by age group.
If a person in this city is selected at random, which of the following is closest to the probability of selecting a person who is greater than 65 years old, given that the person is at least 18 years old?
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概率与条件概率进阶
A choir of 48 singers has 12 members who sing bass. If one singer from the choir is selected at random, what is the probability of selecting a singer who sings bass?
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概率与条件概率挑战
The table shows the distribution of people in a certain city by age group.
If a person in this city is selected at random, which of the following is closest to the probability of selecting a person who is greater than 65 years old, given that the person is at least 18 years old?
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概率与条件概率挑战
One of these participants will be selected at random. What is the probability of selecting a participant from group A, given that the participant is at least 10 years of age?
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概率与条件概率进阶
The table gives the distribution of flavor and type of topping for customer orders at an ice cream shop.
If a customer order is selected at random, what is the probability of selecting an order with sprinkles, given the flavor of ice cream is vanilla?
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