Two classes of elementary school students were asked what activity they want to do during recess.Each student selects one recess option. The table summarizes the recess preference of each studentin the class.Kickball/Classtag playground kickballclass A27class B101. What is the probability that a student selected at random prefers to play tag at recess?2. What is the probability that a student selected at random prefers to play tag or kickball at recess?3. What is the probability that a student in class A selected at random prefers to play kickball atrecess?4. What is the probability that a student selected at random is in class B and prefers to play tag atrecess?

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Answered: Two classes of elementary school…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student chosen randomly from the class does not have a cat or a dog? Has a dog Does not have a dog Has a cat 9 6 Does not have a cat 2 11
Observe the question below and the two possible solutions. State which solution is correct and give a reason for your choice. For a group of 300 cars the numbers, classified by colour and country of manufacture, are shown in the table. Black Silver WhiteKorea 33 34 35Japan 23 9 24America 16 25 34Germany 19 16 32 One car is selected at random from this group. Find the probability that the selected car is a black or white car manufactured in Korea. Solution 1 P (BUW) = P (B) + P (W) = 33/300 + 35/300 = 68/300 Solution 2 P (BUW) = P (B) + P (W) = 33/102 + 35/102 = 68/102
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50 % of this population prefers the color black. If 16 buyers are randomly selected, what is the probability that less than 12 buyers would prefer black? Round your answer to four decimal places. Answer How to enter your answer (opens in new window) Tables Keypad Keyboard Shortcuts
When three athletes compete, the probability of winning the race for the first athlete (A1) is 1/3, the probability for the second athlete (A2) to win the race 1/4, and the probability for the third athlete (A3) to win the race 1/5. Athletes compete 2 times. What is the probability of winning the first race A1 and second race A2, or first race A1 and second race A3?Note: Use the tree diagram. The requested P(A1A2 or A1A3=P(A1A2UA1A3)=P(A1A2)+P(A1A3)
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A card is drawn at random from a deck of 52 cards. Find the probability of drawing a face card. (A face card is a king, queen, or jack.) Find the probability of drawing either a king or a queen. Find the probability of drawing either a red card with face value at least 10 or a black card with face value at most 6.
A survey found that 30% of pet owners had their pets bathed professionally rather than do it themselves. If 10 pet owners are randomly selected, find the probability that a. Exactly 4 people have their pets bathed professionally. b. At most 4 people have their pets bathed professionally.
A cell phone company collects the following data for a month on their customers:The company plans to build a cell phone tower at any one of the areas. It is based on the probability of a customer available in a particular area in the month.Which area will they choose to build the tower?
The number of people who survived the Titanic based on class and gender is in the following table. Suppose a person is picked at random from the survivors. What is the probability that a survivor was male?
You play two games against the same opponent. The probability you win thefirst game is 0.4. If you win the first game, the probability you also win the second is 0.2.If you lose the first game, the probability that you win the second is 0.3. A tie is not anoption.a. Are the two games independent? Explain.b. What’s the probability you lose both games?c. What’s the probability you win both games?d. Let random variable X be the number of games you win. Find the probabilitymodel for X.
Kevin is hiring two interns, and all applicants are either enrolled at Reading College (R) or Beekman College (B). He randomly picks two interns from the entire set of applicants. The tree diagram below shows the probabilities of the different outcomes. Based on the diagram, what is the probability of hiring two interns from Reading College? Provide the final answer as a fraction.
Use the table below to find the chance that a randomly selected person on the student government board is either has off-campus housing or is a sophomore. Students on the Student Government Board Classification On-Campus Housing Off-Campus Housing Freshman 1 Sophomore 3 Junior 0. Senior 4. Graduate Student 3.

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