STAT 102 Final: STAT 102 UPenn FinalexFall. Solutions
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Solutions: 1-sample t-test, simple linear regression, chi-squared goodness of fit test, multiple linear regression, 2-way anova, b, a, e, d, c, b, b, c, b, d. Ho: recall rate is independent of media type (same recall rate for all 3 media) Ha: recall rate is not independent of media type. One point (#92) has high leverage: none of the points have high influence (all cook"s distances <1. 0). Conclude that at least one of the coefficients is nonzero. Yes, this group of variables is useful in predicting y=loss: ho: gender . Don"t need to include gender in the model if all other variables are included. If you round the last term to . 003. Ok to use large n small n large s. Conclude that men"s and women"s losses are different. From the data we see men"s losses are bigger: no. Ha: there is an interaction between price and display. Conclude that there is an interaction between price and display.
