NOTE: a cribsheet is provided as part of the exhibits with all exams. There is one typo--a missing over-bar on X in the formula for the confidence interval for mean prediction. This will be fixed in the version distributed during the exam.

NOTE: Prior to the Fall of 1997, the course used Version 7.0 of SHAZAM. In that version, the format of the p-values for hypothesis testing was different:

SHAZAMused toreport the percentile of the t-distribution represented by the value of the t-test statistic in the p-value column of the regression output. This meant that p-values ranged from zero (if the t-ratio was a large negative number) up to 1.0000 (if the t-ratio was a large positive number). You needed a p-value less than 0.025 or greater than 0.975 in order to reject the zero hypothesis about the corresponding parameter at the 5% level of significance.

SHAZAMnowreports something more intuitive, namely the probability of occurrence of a t-test statistic value larger in absolute value than the number appearing in the t-ratio column if the zero hypothesis is true. This is the "area in the two tails" cut off by the t-ratio value and its negative. Now, if the p-valueis smaller than 0.05, it means that the zero hypothesis about the corresponding parameter isrejectedat the 5% level of significance.

Past Midterm Exam Inventory
| ||||
---|---|---|---|---|

EXAM | QUESTIONS | FILES | EXHIBITS | SOLUTIONS |

Econ 143
F'94 Midterm |
Questions | Not available | Exhibits | Key not available. |

Econ 143
F'95 Midterm |
Questions | Not available | Exhibits | Solutions |

Econ 143
F'97 Midterm |
Questions |
mailroom.sha coffee.sha mailroom.dat coffee.dat |
Exhibits | Solutions |

Econ 143
W'98 Midterm |
Questions |
whoopie.sha whoopie.dat |
Exhibits | Solutions |

Policy Studies 208
W'98 Midterm |
Questions |
drycl.sha drycl.dat |
Exhibits | Solutions |

Econ 143
F'98 Midterm |
Questions |
smokes.sha smokes.dat |
Exhibits | Solutions |

Past Final Exam Inventory
| ||||
---|---|---|---|---|

EXAM | QUESTIONS | FILES | EXHIBITS | SOLUTIONS |

Econ 143
F'94 Final |
Questions | Not available | Exhibits | Solutions |

Econ 143
F'95 Final |
Questions | Not available | Exhibits | |

Econ 143
F'97 Final |
Questions | Exhibits | Solutions | |

Econ 143
W'98 Final |
Questions |
waffle.dat
czoned.prn czonqe.prn kidpop2.dat recr.dat |
Exhibits | Solutions |

Policy Studies 208
W'98 Final |
Questions |
zhet2.dat
czonqe.prn kidpop2.dat |
Exhibits | Solutions |

Prepared by: Trudy Ann Cameron; Updated: 3:05 PM 10/5/98; site index