**Where would you be without your trusty probability tables?**

Understanding your probability distributions isn’t quite enough. For some of them, you need to be able to **look up your probabilities** in standard **probability tables**. In this appendix, you’ll find tables for the normal, t, and χ^{2} distributions, so you can look up probabilities to your heart’s content.

This table gives you the probability of finding P(Z < z) where Z ~ N(0, 1). To find the P(Z < z), look up your value of z to 2 decimal places, then read off the probability.

z ## NoteLook up the value of z using the first column and first row... | .00 | .01 | .02 | .03 | .04 | .05 | .06 | .07 | .08 | .09 |

| .0003 | .0003 | .0003 | .0003 | .0003 | .0003 | .0003 ## Note...then read off the probability from the table. | .0003 | .0003 | .0002 |

| .0005 | .0005 | .0005 | .0004 | .0004 | .0004 | .0004 | .0004 | .0004 | .0003 |

| .0007 | .0007 | .0006 | .0006 | .0006 | .0006 | .0006 | .0005 | .0005 | .0005 ## NoteThese are the probabilities for P(Z > z) where z is negative. |

| .0010 | .0009 | .0009 | .0009 | .0008 | .0008 | .0008 | .0008 | .0007 | .0007 |

| .0013 | .0013 | .0013 | .0012 | .0012 | .0011 | .0011 | .0011 | .0010 | .0010 |

| .0019 | .0018 | .0018 | .0017 | .0016 | .0016 | .0015 | .0015 | .0014 | .0014 |

| .0026 | .0025 | .0024 | .0023 | .0023 | .0022 | .0021 | .0021 | .0020 | .0019 |

| .0035 | .0034 | .0033 | .0032 | .0031 | .0030 | .0029 | .0028 | .0027 | .0026 |

| .0047 | .0045 | .0044 | .0043 | .0041 | .0040 | .0039 |

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