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Answer the following question using the penguin_female data set. This includes body mass measurements for individual females over 2 years. We are interested in determining if there is a difference in body mass between the first and second years (mass_1 and mass_2, respectively). Note: an individual bird’s mass is being tracked across two years. penguin_female.csv

Conduct a t-test to determine if the number of caterpillars (NbrCaterpillars) is less than 150 on Veronica plants.  Based on your t-test what do you conclude? (Select all that apply)  

Select the best model using bidirectional selection for the grasslands data set. Use water content as the response variable and all other variables as predictors. Start with the full model. Which of the following is selected according to bidirectional model selection?

Use the ToothGrowth dataset to complete the following questions. This data set contains information on the effect of supplement given (supp) and dose of supplement (dose) on tooth length (len). For the following questions, len is the continuous response variable (Y) and dose is the categorical predictor variable (X). Note: supp has two levels (VC & OJ), use only OJ for the following questions (i.e., remove the data on the supplement “VC”).  ToothGrowth.csv

  Avant-garde artists sought to distinguish themselves from traditional “high culture” and from mass-market tastes.  

  In which cultural center did Cubism develop?  

  What does the abbreviation R&B stand for?  

  William Grant Still composed the first symphony by an African American to be performed by a major American orchestra.  

  The definition of postmodern in music is simpler than in other art forms.  

  The Depression had little impact on the performing arts.