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Homework answers / question archive / 1)A probability close to 1 means the event is likely to happen

1)A probability close to 1 means the event is likely to happen

Math

1)A probability close to 1 means the event is likely to happen.
 

 

 

 

 

 

 

  1. The different paths on a tree diagram are mutually exclusive.
     
  2. A probability that is based on expert opinion is
     
  3. If A and B are mutually exclusive events, then P(A or B) is written
     
  4. The probabilities on each branch from a given dot of a tree diagram
     
  5. A bag contains 5 red balls and 3 white balls. Two balls are to be drawn from the bag without replacement. The desired outcome is 1 red ball and 1 white ball. Fill in the missing values of the tree diagram.

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  1. A probability
     

 

  1. An event is the collection of one or more
     

 

  1. In 4 of the last 5 years, there has been an avalanche in the backcountry of British Columbia. Based on this, we estimate the probability of an avalanche this year to be 0.8. This is an example of what kind of approach to probability?
     

 

  1. Which formula represents the complement rule?
     

 

  1. A survey of “natural” stores in Alberta revealed that 40% sold health food, 45% sold vitamins and supplements and, 25% sold both. What is the probability of selecting a store at random and finding it sells either health food or vitamins and supplements?-
     
  2. If A and B are dependent events we write their joint probability as
     
  3. There are 9 bikes shipped to the local bike shop. Of the 9 total, 3 are defective. What is the probability of the first 2 sold being defective?
     
  4. If a meal consists of three courses, and you have 2 choices for the first course, 3 choices for the second course, and 5 choices for the third choice, how many different meal combinations can be made?
     
  5. If you have 5 qualified candidates to fill the positions of President and Vice President, how many ways can the positions be filled?
     
  6. A list giving all possible outcomes of an experiment and their corresponding probability is called
     
  7. A random variable
     
  8. Identify the discrete variable.
     
  9. Which of the following statements is true about a probability distribution?
     
  10. To construct a binomial probability distribution, we need to know
     
  11. To use a Hypergeometric probability distribution we need to know
     
  12. A florist makes 8 bouquets of roses. Of the 8 bouquets, 6 have roses that are close to expiry. A customer buys 4 bouquets. What is the probability that 3 of the bouquets have roses close to expiry?
     
  13. Which of the following are characteristics of a probability distribution?
     
  14. A discrete distribution is usually the result of
     
  15. What are the characteristics of a continuous probability distribution?
     
  16. In the table x represents the number of blueberries in Mrs. Muffin Muffins. Calculate the standard deviation of the probability distribution.

 

x

P(x)

10

0.3

11

0.2

12

0.2

13

0.3


 

  1. A finance company estimates 35% of people owe more than $20 000 in personal loans. In a random sample of 10 individuals what is the probability that half of them owe more than $20 000 in personal loans?
     
  2. Which of the following is a major difference between the binomial and the hypergeometric distributions?
     
  3. A Poisson probability distribution can be used to approximate a binomial probability distribution when
     
  4. An average of two people per minute arrive at the check-out counter of a grocery store. What is the probability that exactly one will arrive in a given minute?
     

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