The distribution of grades is know to follow a normal distribution, but the mean and variance are unknown. A random sample of 12 students produced the following scores:(adsbygoogle = window.adsbygoogle || []).push({});

59, 84, 68, 93, 49, 77, 82, 75, 81, 58, 70, 80

Find the 90% two-sided confidence interval for the mean score.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Find the 90% two-sided confidence interval for the mean score.

Loading...

Similar Threads - Find sided confidence | Date |
---|---|

I Confusion over using integration to find probability | Jun 27, 2017 |

I How To Find 68% Confidence Interval After Running MCMC | May 29, 2017 |

I Finding the average time with given probability | Apr 21, 2017 |

I How do I find the standardized coefficients? | Apr 3, 2017 |

Finding the MVUE of a two-sided interval of a normal | Apr 24, 2014 |

**Physics Forums - The Fusion of Science and Community**