Ron Larson
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Chapter 8 Review Exercises

Chapter 8 Review Exercises
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  • 19. Summer Weather

    The table shows the probability of sunshine or rain on any given day in July for a town. What is the probability of rain three days in a row?

    • Worked-Out Solution

      The probability of rain three days in a row is

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                 ___      ______     ___      ______  
  ____      / _ \\   /_   _//   / _ \\   /_   _// 
 |    \\   | / \ ||    | ||    / //\ \\    | ||   
 | [] ||   | \_/ ||   _| ||   |  ___  ||  _| ||   
 |  __//    \___//   /__//    |_||  |_|| /__//    
 |_|`-`     `---`    `--`     `-`   `-`  `--`     
 `-`
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  • 20. Summer Weather

    The table shows the probability of sunshine or rain on any given day in July for a town. What is the probability of sunshine five days in a row?

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     ______     ______    _  __     ___      ______  
|      \\  /_   _//  | |/ //   / _ \\   /_   _// 
|  --  //   -| ||-   | ' //   | / \ ||  `-| |,-  
|  --  \\   _| ||_   | . \\   | \_/ ||    | ||   
|______//  /_____//  |_|\_\\   \___//     |_||   
`------`   `-----`   `-` --`   `---`      `-`'
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  • 21. Summer Weather

    The table shows the probability of sunshine or rain on any given day in July for a town. What is the probability of rain at least one day in a week?

    • Worked-Out Solution

      The probability that it is sunny for all 7 days in the week is

      So, the probability that it will rain at least one day during the week is

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      ____     _    _     ______    ______    ______  
 |  _ \\  | || | ||  /_   _//  /_   _//  /_   _// 
 | |_| || | || | ||    | ||     -| ||-     | ||   
 | .  //  | \\_/ ||   _| ||     _| ||_    _| ||   
 |_|\_\\   \____//   /__//     /_____//  /__//    
 `-` --`    `---`    `--`      `-----`   `--`
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  • 22. Summer Weather

    The table shows the probability of sunshine or rain on any given day in July for a town. What is the probability of sunshine at least once during a week?

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     _    _     _____    _    _    _    _             
| \  / ||  |  ___|| | || | || | || | ||   ____    
|  \/  ||  | ||__   | || | || | || | ||  |    \\  
| .  . ||  | ||__   | \\_/ || | \\_/ ||  | [] ||  
|_|\/|_||  |_____||  \____//   \____//   |  __//  
`-`  `-`   `-----`    `---`     `---`    |_|`-`   
                                         `-`
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  • 23. Winter Weather

    The probability of snow on any given day in December for a town is 30%. What is the probability of snow four days in a row?

    • Worked-Out Solution

      The probability of snow 4 days in a row is

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                 ___     _    _    _    _    _____    
  ____      / _ \\  | |  | || | || | || |  __ \\  
 |    \\   / //\ \\ | |/\| || | || | || | |  \ || 
 | [] ||  |  ___  |||  /\  || | \\_/ || | |__/ || 
 |  __//  |_||  |_|||_// \_||  \____//  |_____//  
 |_|`-`   `-`   `-` `-`   `-`   `---`    -----`   
 `-`
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  • 24. Winter Weather

    The probability of snow on any given day in December for a town is 30%. What is the probability of no snow six days in a row?

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      _____     ______    ______     ___      ______  
 / ____||  /_   _//  /_   _//   / _ \\   /_   _// 
/ //---`'   -| ||-     | ||    | / \ ||  `-| |,-  
\ \\___     _| ||_    _| ||    | \_/ ||    | ||   
 \_____||  /_____//  /__//      \___//     |_||   
  `----`   `-----`   `--`       `---`      `-`'
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  • 25. Winter Weather

    The probability of snow on any given day in December for a town is 30%. What is the probability of snow at least once during the week?

    • Worked-Out Solution

      The probability that it doesn't snow for all 7 days in the week is

      So, the probability that it will snow at least one day during the week is

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    These comments are not screened before publication. Constructive debate about the information on this page is welcome, but personal attacks are not. Please do not post comments that are commercial in nature or that violate copyright. Comments that we regard as obscene, defamatory, or intended to incite violence will be removed. If you find a comment offensive, you may flag it.
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      _____      ___    __    __   _    _             
 / ____||   / _ \\  \ \\ / // | || | ||   ____    
/ //---`'  | / \ ||  \ \/ //  | || | ||  |    \\  
\ \\___    | \_/ ||   \  //   | \\_/ ||  | [] ||  
 \_____||   \___//     \//     \____//   |  __//  
  `----`    `---`       `       `---`    |_|`-`   
                                         `-`
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  • 26. Winter Weather

    The probability of snow on any given day in December for a town is 30%. What is the probability of no snow at least once during a week?

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     ______     _____    _    _     ______    ______  
|      \\  |  ___|| | || | ||  /_   _//  /_   _// 
|  --  //  | ||__   | || | ||   -| ||-     | ||   
|  --  \\  | ||__   | \\_/ ||   _| ||_    _| ||   
|______//  |_____||  \____//   /_____//  /__//    
`------`   `-----`    `---`    `-----`   `--`
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