a)
To find: The probability that the fire department takes at most 8 minutes.
The probability is 0.9772.
Given information:
Formula used:
The formula of the z-score is:
Calculation:
Consider, X be the random variable that is distributed normally.
The probability is calculated as:
The required probability is 0.9772.
b)
To find: The probability that the fire department takes between 4 and 7 minutes.
The probability is 0.8185.
Calculation:
Consider, X be the random variable that is distributed normally.
The probability is calculated as:
The required probability is 0.8185.
Chapter 6 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education