Publications

1. Using the mpg data, create a data frame called mpg46 that only includes 4 and 6 cylinder cars. Conduct a t-test that compares highway fuel efficiency between the 4 and 6 cylinder cars and save the output as mpg_ttest.

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2. Load {papaja} and use the apa_print() function to extract the mean difference between cylinder numbers and the 95% confidence interval from mpg_ttest.

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3. Extract the t-statistic and p-value for mpg_ttest.

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4. Extract the mean difference, 95% CI, t-statistic, and p-value in one string.

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5. Use printp() to format 0.0000001 as a p-value in APA format.

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6. Dropping the leading zero is silly. Use printnum() to return the same output as #5 but include the leading zero.

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7. Load {cocoon} and use the format_p() function to return the same output as #5 and #6.

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