# What is Z for a 99 confidence interval?

Asked By: Adrienn Schuld | Last Updated: 1st July, 2020

Category:
business and finance
bankruptcy

Conclusion

Confidence Interval | Z |
---|---|

90% | 1.645 |

95% | 1.960 |

99% | 2.576 |

99.5% | 2.807 |

Similarly, it is asked, what is the z score for a 99 confidence interval?

Statistics For Dummies, 2nd Edition

Confidence Level | z*– value |
---|---|

90% | 1.64 |

95% | 1.96 |

98% | 2.33 |

99% | 2.58 |

Subsequently, question is, what is Z value for 95 confidence interval? 1.96

In this manner, what is Z for 90 confidence interval?

Area in Tails

Confidence Level | Area between 0 and z-score | z-score |
---|---|---|

90% | 0.4500 | 1.645 |

95% | 0.4750 | 1.960 |

98% | 0.4900 | 2.326 |

99% | 0.4950 | 2.576 |

What is the appropriate Z value to calculate an 80 confidence interval?

The **z***-table shows the answer: An **80**% **confidence level** has a **z***-**value** of 1.28.