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# MATH 153 Chapter 7

### Normal Probability Distribution

Question | Answer |
---|---|

The area under the normal curve to the right of 𝛍 equals ___________. | 1/2 |

How do you calculate the area to the right of a Z-score? | 1 - area |

How do you calculate the area between two Z-scores? | Z2 - Z1 |

When can a graph represent a normal density function if it is symmetric about its mean? | bell-shaped, has a single peak and the highest point is the mean, and it approaches (but never reaches) the horizontal axis and the x increases or decreases. |

What distinguishes chapter 7 from chapter 8 and 9? | must say “normal” in the question |

True or False. You can use a Z-chart for skewed data. | False |

Name another term for 𝛍. | 50th percentile |

The area under the normal curve to the right of μ equals _______. | 1/2 |

True or false: The normal curve is symmetric about its mean, μ. | True |

The points at x=_________ and x=_________ are the inflection points on the normal curve. | μ−σ, μ+σ |